/* ═══════════════════════════════════════════════════════════════
   leetTrack — Premium Dark Theme
   ═══════════════════════════════════════════════════════════════ */

/* ─── Design Tokens ─── */
:root {
    /* Backgrounds */
    --bg-primary: #0a0a1a;
    --bg-secondary: #0f0f23;
    --bg-card: rgba(22, 22, 45, 0.7);
    --bg-card-hover: rgba(30, 30, 55, 0.8);
    --bg-input: rgba(255, 255, 255, 0.05);

    /* Brand */
    --accent: #FFA116;
    --accent-glow: rgba(255, 161, 22, 0.3);
    --accent-soft: rgba(255, 161, 22, 0.12);
    --teal: #2cbb5d;
    --teal-glow: rgba(44, 187, 93, 0.25);

    /* Difficulty */
    --easy: #2cbb5d;
    --medium: #FFA116;
    --hard: #ef4743;

    /* Text */
    --text-primary: #e8e8ef;
    --text-secondary: #9595a8;
    --text-muted: #5c5c72;

    /* Borders */
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 161, 22, 0.3);

    /* Effects */
    --glass-blur: 16px;
    --card-radius: 16px;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(255, 161, 22, 0.08);

    /* Transitions */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --duration: 0.3s;
}

/* ─── Reset ─── */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background ambient glow */
body::before {
    content: "";
    position: fixed;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 161, 22, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 161, 22, 0.3);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 161, 22, 0.5);
}

/* ═══════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
}

.header-inner {
    max-width: 1280px;
    margin: 0 auto;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo-icon {
    font-size: 22px;
}

.logo-text {
    font-family: "JetBrains Mono", monospace;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.accent {
    color: var(--accent);
}

/* Search bar */
.search-bar {
    display: flex;
    align-items: center;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 4px 4px 4px 14px;
    transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
    max-width: 480px;
    width: 100%;
}

.search-bar:focus-within {
    border-color: var(--border-hover);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.search-icon {
    color: var(--text-muted);
    display: flex;
    flex-shrink: 0;
}

#username-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: "JetBrains Mono", monospace;
    font-size: 14px;
    padding: 8px 12px;
    min-width: 0;
}

#username-input::placeholder {
    color: var(--text-muted);
}

#analyze-btn {
    background: var(--accent);
    color: #000;
    border: none;
    border-radius: 8px;
    padding: 8px 20px;
    font-family: "Inter", sans-serif;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--duration) var(--ease), transform 0.15s var(--ease);
    white-space: nowrap;
}

#analyze-btn:hover {
    background: #ffb340;
    transform: scale(1.03);
}

#analyze-btn:active {
    transform: scale(0.97);
}

/* ═══════════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════════ */
.hero {
    max-width: 1280px;
    margin: 0 auto;
    padding: 100px 24px 80px;
    text-align: center;
    animation: fadeInUp 0.8s var(--ease);
}

.hero h1 {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.hero-sub {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto 40px;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-feat {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    backdrop-filter: blur(8px);
}

/* ═══════════════════════════════════════════════════════════════
   LOADING
   ═══════════════════════════════════════════════════════════════ */
.loading-section {
    padding: 120px 24px;
    text-align: center;
}

.loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.loader-ring {
    width: 56px;
    height: 56px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

.loader-text {
    font-size: 16px;
    color: var(--text-secondary);
}

.dots {
    animation: blink 1.4s infinite;
}

/* ═══════════════════════════════════════════════════════════════
   ERROR
   ═══════════════════════════════════════════════════════════════ */
.error-section {
    padding: 100px 24px;
    display: flex;
    justify-content: center;
}

.error-card {
    background: var(--bg-card);
    border: 1px solid rgba(239, 71, 67, 0.3);
    border-radius: var(--card-radius);
    padding: 48px;
    text-align: center;
    max-width: 440px;
    backdrop-filter: blur(var(--glass-blur));
}

.error-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.error-card h2 {
    font-size: 22px;
    margin-bottom: 8px;
}

.error-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ═══════════════════════════════════════════════════════════════
   CARDS (shared)
   ═══════════════════════════════════════════════════════════════ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--card-radius);
    padding: 28px;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    box-shadow: var(--shadow-card);
    transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
    animation: fadeInUp 0.6s var(--ease) both;
}

.card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card), var(--shadow-glow);
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.card-header-row .card-title {
    margin-bottom: 0;
}

.sub-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 14px;
    color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════════════════
   DASHBOARD GRID
   ═══════════════════════════════════════════════════════════════ */
.dashboard {
    max-width: 1280px;
    margin: 0 auto;
    padding: 32px 24px 80px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.grid-row {
    display: grid;
    gap: 24px;
}

.row-profile {
    grid-template-columns: 380px 1fr;
}

.row-contest {
    grid-template-columns: 1fr;
}

.row-calendar {
    grid-template-columns: 1fr;
}

.row-lang-skill {
    grid-template-columns: 1fr 1fr;
}

.row-readiness {
    grid-template-columns: 1fr;
}

.row-submissions {
    grid-template-columns: 1fr;
}

/* Staggered animation delays */
.grid-row:nth-child(1) .card { animation-delay: 0.1s; }
.grid-row:nth-child(2) .card { animation-delay: 0.2s; }
.grid-row:nth-child(3) .card { animation-delay: 0.3s; }
.grid-row:nth-child(4) .card:nth-child(1) { animation-delay: 0.35s; }
.grid-row:nth-child(4) .card:nth-child(2) { animation-delay: 0.4s; }
.grid-row:nth-child(5) .card { animation-delay: 0.45s; }
.grid-row:nth-child(6) .card { animation-delay: 0.5s; }

/* ═══════════════════════════════════════════════════════════════
   PROFILE CARD
   ═══════════════════════════════════════════════════════════════ */
.profile-header {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 20px;
}

.avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 2px solid var(--accent);
    object-fit: cover;
    box-shadow: 0 0 20px var(--accent-glow);
}

.profile-name {
    font-size: 20px;
    font-weight: 700;
}

.profile-username {
    font-family: "JetBrains Mono", monospace;
    font-size: 13px;
    color: var(--accent);
}

.profile-title {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.profile-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.profile-stat {
    text-align: center;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    padding: 12px 8px;
}

.stat-label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.stat-value {
    display: block;
    font-family: "JetBrains Mono", monospace;
    font-size: 16px;
    font-weight: 600;
    color: var(--accent);
}

.profile-meta {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.profile-meta span {
    margin-right: 14px;
}

.profile-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.profile-links a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    text-decoration: none;
    background: rgba(255, 255, 255, 0.04);
    padding: 6px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: color var(--duration), border-color var(--duration);
}

.profile-links a:hover {
    color: var(--accent);
    border-color: var(--border-hover);
}

/* ═══════════════════════════════════════════════════════════════
   PROBLEM STATS
   ═══════════════════════════════════════════════════════════════ */
.stats-content {
    display: flex;
    align-items: center;
    gap: 32px;
}

.donut-container {
    position: relative;
    width: 180px;
    height: 180px;
    flex-shrink: 0;
}

.donut-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.donut-total {
    display: block;
    font-family: "JetBrains Mono", monospace;
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.donut-label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
}

.stats-bars {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.stat-bar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.stat-diff {
    font-size: 13px;
    font-weight: 600;
}

.stat-diff.easy { color: var(--easy); }
.stat-diff.medium { color: var(--medium); }
.stat-diff.hard { color: var(--hard); }

.stat-count {
    font-family: "JetBrains Mono", monospace;
    font-size: 13px;
    color: var(--text-primary);
}

.stat-of {
    color: var(--text-muted);
}

.stat-bar-track {
    height: 8px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    overflow: hidden;
}

.stat-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 1s var(--ease);
}

.stat-bar-fill.easy { background: linear-gradient(90deg, var(--easy), #45d67a); }
.stat-bar-fill.medium { background: linear-gradient(90deg, var(--medium), #ffc247); }
.stat-bar-fill.hard { background: linear-gradient(90deg, var(--hard), #ff6b68); }

/* ═══════════════════════════════════════════════════════════════
   CONTEST
   ═══════════════════════════════════════════════════════════════ */
.contest-stats {
    display: flex;
    gap: 24px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.contest-stat-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    padding: 14px 20px;
    text-align: center;
    min-width: 120px;
}

.contest-stat-value {
    font-family: "JetBrains Mono", monospace;
    font-size: 20px;
    font-weight: 600;
    color: var(--accent);
    display: block;
}

.contest-stat-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
    display: block;
}

.contest-chart-container {
    height: 280px;
}

.contest-badges {
    display: flex;
    gap: 8px;
}

.no-contest-msg {
    text-align: center;
    color: var(--text-muted);
    padding: 40px;
    font-size: 14px;
}

/* ═══════════════════════════════════════════════════════════════
   CALENDAR HEATMAP
   ═══════════════════════════════════════════════════════════════ */
.streak-info {
    display: flex;
    gap: 16px;
    font-size: 13px;
}

.streak-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
}

.streak-item .streak-num {
    font-family: "JetBrains Mono", monospace;
    font-weight: 600;
    color: var(--accent);
}

.heatmap-wrapper {
    overflow-x: auto;
    padding-bottom: 8px;
}

.heatmap-months {
    display: flex;
    margin-bottom: 4px;
    padding-left: 0;
    font-size: 11px;
    color: var(--text-muted);
}

.heatmap-months span {
    flex-shrink: 0;
}

.heatmap-grid {
    display: flex;
    gap: 3px;
}

.heatmap-week {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.heatmap-day {
    width: 13px;
    height: 13px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.04);
    transition: transform 0.15s var(--ease);
    cursor: default;
    position: relative;
}

.heatmap-day:hover {
    transform: scale(1.6);
    z-index: 2;
}

.heatmap-day.l1 { background: rgba(255, 161, 22, 0.2); }
.heatmap-day.l2 { background: rgba(255, 161, 22, 0.4); }
.heatmap-day.l3 { background: rgba(255, 161, 22, 0.65); }
.heatmap-day.l4 { background: var(--accent); }

.heatmap-legend {
    display: flex;
    align-items: center;
    gap: 4px;
    justify-content: flex-end;
    margin-top: 10px;
    font-size: 11px;
    color: var(--text-muted);
}

.legend-box {
    width: 13px;
    height: 13px;
    border-radius: 3px;
}

.legend-box.l0 { background: rgba(255, 255, 255, 0.04); }
.legend-box.l1 { background: rgba(255, 161, 22, 0.2); }
.legend-box.l2 { background: rgba(255, 161, 22, 0.4); }
.legend-box.l3 { background: rgba(255, 161, 22, 0.65); }
.legend-box.l4 { background: var(--accent); }

/* ═══════════════════════════════════════════════════════════════
   LANGUAGES CHART
   ═══════════════════════════════════════════════════════════════ */
.lang-chart-container {
    height: 300px;
}

/* ═══════════════════════════════════════════════════════════════
   SKILLS BREAKDOWN
   ═══════════════════════════════════════════════════════════════ */
.skills-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 18px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    padding: 4px;
}

.skill-tab {
    flex: 1;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 600;
    border: none;
    background: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 8px;
    transition: all var(--duration) var(--ease);
    font-family: "Inter", sans-serif;
}

.skill-tab.active {
    background: var(--accent);
    color: #000;
}

.skill-tab:hover:not(.active) {
    color: var(--text-primary);
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 280px;
    overflow-y: auto;
    padding-right: 4px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.skill-name {
    font-size: 13px;
    color: var(--text-secondary);
    width: 140px;
    flex-shrink: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.skill-bar-track {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 3px;
    overflow: hidden;
}

.skill-bar-fill {
    height: 100%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent), #ffc247);
    transition: width 0.8s var(--ease);
}

.skill-count {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    color: var(--text-muted);
    width: 32px;
    text-align: right;
    flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════════
   JOB READINESS
   ═══════════════════════════════════════════════════════════════ */
.readiness-content {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.readiness-gauge-section {
    display: flex;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

.gauge-ring {
    position: relative;
    width: 140px;
    height: 140px;
    flex-shrink: 0;
}

.gauge-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.gauge-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.06);
    stroke-width: 8;
}

.gauge-fill {
    fill: none;
    stroke: var(--accent);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 326.73;
    stroke-dashoffset: 326.73;
    transition: stroke-dashoffset 1.5s var(--ease);
    filter: drop-shadow(0 0 6px var(--accent-glow));
}

.gauge-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.gauge-value {
    display: block;
    font-family: "JetBrains Mono", monospace;
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
}

.gauge-label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.readiness-recommendations {
    flex: 1;
    min-width: 200px;
}

.rec-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.rec-item::before {
    content: "→";
    color: var(--accent);
    font-weight: 600;
    flex-shrink: 0;
}

.company-scores {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
}

.company-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    text-align: center;
    transition: border-color var(--duration) var(--ease), transform 0.2s var(--ease);
}

.company-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.company-icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.company-name {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
}

.company-score-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.company-score-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 1.2s var(--ease);
}

.company-score-value {
    font-family: "JetBrains Mono", monospace;
    font-size: 18px;
    font-weight: 700;
}

/* Company score coloring */
.score-high { color: var(--teal); }
.score-high .company-score-fill { background: linear-gradient(90deg, var(--teal), #5ae08a); }
.score-med { color: var(--medium); }
.score-med .company-score-fill { background: linear-gradient(90deg, var(--medium), #ffc247); }
.score-low { color: var(--hard); }
.score-low .company-score-fill { background: linear-gradient(90deg, var(--hard), #ff8180); }

.skill-gaps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
}

.gap-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(239, 71, 67, 0.06);
    border: 1px solid rgba(239, 71, 67, 0.15);
    border-radius: 10px;
    padding: 12px 16px;
}

.gap-topic {
    font-size: 13px;
    font-weight: 500;
}

.gap-stat {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    color: var(--hard);
}

/* ═══════════════════════════════════════════════════════════════
   SUBMISSIONS TABLE
   ═══════════════════════════════════════════════════════════════ */
.submissions-table-wrapper {
    overflow-x: auto;
}

.submissions-table {
    width: 100%;
    border-collapse: collapse;
}

.submissions-table th {
    text-align: left;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
}

.submissions-table td {
    padding: 12px 16px;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.submissions-table tbody tr {
    transition: background var(--duration) var(--ease);
}

.submissions-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

.submissions-table .problem-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--duration);
}

.submissions-table .problem-link:hover {
    color: var(--accent);
}

.lang-badge {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    background: var(--accent-soft);
    color: var(--accent);
    padding: 3px 8px;
    border-radius: 6px;
}

.view-more-container {
    text-align: center;
    margin-top: 15px;
    padding-bottom: 15px;
}
.view-more-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 8px 24px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}
.view-more-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: #fff;
    transform: translateY(-1px);
}

/* ═══════════════════════════════════════════════════════════════
   REVIEW BADGE (Header)
   ═══════════════════════════════════════════════════════════════ */
.review-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 161, 22, 0.15);
    border: 1px solid rgba(255, 161, 22, 0.3);
    color: var(--accent);
    font-family: "JetBrains Mono", monospace;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 20px;
    flex-shrink: 0;
    animation: pulse-glow 2s ease-in-out infinite;
}
@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 161, 22, 0.2); }
    50% { box-shadow: 0 0 12px 4px rgba(255, 161, 22, 0.15); }
}

/* ═══════════════════════════════════════════════════════════════
   WEAKNESS DETECTION
   ═══════════════════════════════════════════════════════════════ */
.row-weakness { grid-template-columns: 1fr; }

.weakness-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.weakness-indicators {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.weakness-indicator {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 20px;
}

.indicator-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.indicator-icon { font-size: 18px; }
.indicator-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.indicator-bar-track {
    height: 8px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.indicator-bar-fill {
    height: 100%;
    border-radius: 4px;
    width: 0%;
    transition: width 1s var(--ease), background 0.3s;
}

.indicator-detail {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.difficulty-breakdown {
    display: flex;
    gap: 8px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.bd-chip {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    padding: 4px 10px;
    border-radius: 6px;
    font-weight: 600;
}
.bd-chip.easy { background: rgba(44, 187, 93, 0.12); color: var(--easy); }
.bd-chip.medium { background: rgba(255, 161, 22, 0.12); color: var(--medium); }
.bd-chip.hard { background: rgba(239, 71, 67, 0.12); color: var(--hard); }

.weakness-topics-section { margin-top: 4px; }

.weakness-pills, .strength-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.topic-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 13px;
    border: 1px solid;
    transition: transform 0.2s var(--ease);
}
.topic-pill:hover { transform: translateY(-2px); }

.pill-name { font-weight: 500; }
.pill-stat {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    opacity: 0.7;
}

.severity-critical {
    background: rgba(239, 71, 67, 0.08);
    border-color: rgba(239, 71, 67, 0.25);
    color: var(--hard);
}
.severity-moderate {
    background: rgba(255, 161, 22, 0.08);
    border-color: rgba(255, 161, 22, 0.25);
    color: var(--accent);
}
.severity-strong {
    background: rgba(44, 187, 93, 0.08);
    border-color: rgba(44, 187, 93, 0.25);
    color: var(--teal);
}

/* ═══════════════════════════════════════════════════════════════
   SPACED REPETITION REVIEW QUEUE
   ═══════════════════════════════════════════════════════════════ */
.row-review { grid-template-columns: 1fr; }

.review-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 400;
}

.review-actions-header {
    display: flex;
    gap: 4px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    padding: 4px;
}

.review-filter-btn {
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 600;
    border: none;
    background: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 8px;
    transition: all var(--duration) var(--ease);
    font-family: "Inter", sans-serif;
}
.review-filter-btn.active { background: var(--accent); color: #000; }
.review-filter-btn:hover:not(.active) { color: var(--text-primary); }

.review-explainer {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 16px;
    line-height: 1.5;
}

.review-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 400px;
    overflow-y: auto;
}

.review-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
    gap: 12px;
    flex-wrap: wrap;
    transition: border-color var(--duration) var(--ease);
}
.review-item:hover { border-color: var(--border-hover); }

.review-item.due-now { border-left: 3px solid var(--accent); }
.review-item.dismissed { opacity: 0.5; }

.review-info { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.review-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--duration);
}
.review-title:hover { color: var(--accent); }

.review-due-label {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 6px;
}
.review-due-label.due-now { background: rgba(255, 161, 22, 0.15); color: var(--accent); }
.review-due-label.due-later { background: rgba(44, 187, 93, 0.12); color: var(--teal); }
.review-due-label.dismissed { background: rgba(255, 255, 255, 0.05); color: var(--text-muted); }

.review-actions { display: flex; gap: 6px; flex-wrap: wrap; }

.review-btn {
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s var(--ease);
    font-family: "Inter", sans-serif;
}
.review-btn:hover { border-color: var(--border-hover); color: var(--text-primary); transform: scale(1.03); }
.review-easy:hover { background: rgba(44, 187, 93, 0.1); color: var(--teal); }
.review-hard:hover { background: rgba(255, 161, 22, 0.1); color: var(--accent); }
.review-forgot:hover { background: rgba(239, 71, 67, 0.1); color: var(--hard); }

.review-empty {
    text-align: center;
    color: var(--text-muted);
    padding: 30px;
    font-size: 14px;
}

/* ═══════════════════════════════════════════════════════════════
   ACTIVITY INSIGHTS
   ═══════════════════════════════════════════════════════════════ */
.row-activity { grid-template-columns: 1fr; }

/* Activity Card Premium Glow Effect */
.card-activity {
    position: relative;
    background: rgba(30, 30, 40, 0.4);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 1;
    overflow: hidden;
}
.card-activity::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at top right, rgba(255, 161, 22, 0.15), transparent 40%),
                radial-gradient(circle at bottom left, rgba(44, 187, 93, 0.15), transparent 40%);
    z-index: -1;
    animation: rotateGlow 15s linear infinite;
    opacity: 0.7;
}

@keyframes rotateGlow {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.momentum-badge {
    font-size: 13px;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 6px;
    text-transform: capitalize;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    backdrop-filter: blur(4px);
    transition: transform 0.3s ease;
}
.momentum-badge:hover {
    transform: translateY(-2px) scale(1.05);
}
.mom-up { background: rgba(44, 187, 93, 0.2); color: #4ade80; border: 1px solid rgba(44, 187, 93, 0.4); text-shadow: 0 0 10px rgba(74, 222, 128, 0.5); }
.mom-down { background: rgba(239, 71, 67, 0.2); color: #f87171; border: 1px solid rgba(239, 71, 67, 0.4); text-shadow: 0 0 10px rgba(248, 113, 113, 0.5); }
.mom-steady { background: rgba(255, 161, 22, 0.2); color: #fbbf24; border: 1px solid rgba(255, 161, 22, 0.4); text-shadow: 0 0 10px rgba(251, 191, 36, 0.5); }
.mom-pct {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    opacity: 0.9;
}

.activity-stats-row {
    display: flex;
    gap: 20px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

/* Glassmorphic Stat Boxes */
.activity-stat {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 14px;
    padding: 18px 20px;
    text-align: center;
    min-width: 140px;
    flex: 1;
    position: relative;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    overflow: hidden;
}
.activity-stat::after {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.activity-stat:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 161, 22, 0.3);
}
.activity-stat:hover::after {
    opacity: 0.1;
}

.activity-stat-val {
    display: block;
    font-family: "JetBrains Mono", monospace;
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(to right, #FFA116, #FFCF81);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 4px;
    text-shadow: 0px 4px 20px rgba(255, 161, 22, 0.2);
}

.activity-stat-lbl {
    display: block;
    font-size: 11px;
    color: #a0a0b8;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

/* Charts Wrapper Redesign */
.activity-charts {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 24px;
}

.velocity-chart-container, .day-chart-container { 
    height: 240px; 
    background: rgba(15, 15, 25, 0.4);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid rgba(255,255,255,0.03);
    box-shadow: inset 0 2px 20px rgba(0,0,0,0.2);
}

/* ═══════════════════════════════════════════════════════════════
   COMPLEXITY BENCHMARKING
   ═══════════════════════════════════════════════════════════════ */
.row-benchmarks { grid-template-columns: 1fr; }

.benchmark-summary {
    display: flex;
    gap: 10px;
}

.bench-stat {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}
.bench-improve { background: rgba(255, 161, 22, 0.12); color: var(--accent); }

.benchmarks-table-wrapper { overflow-x: auto; }

.benchmarks-table {
    width: 100%;
    border-collapse: collapse;
}
.benchmarks-table th {
    text-align: left;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
}
.benchmarks-table td {
    padding: 12px 16px;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}
.benchmarks-table tbody tr {
    transition: background var(--duration) var(--ease);
}
.benchmarks-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

.category-badge {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    background: rgba(159, 122, 234, 0.12);
    color: rgba(159, 122, 234, 1);
    padding: 3px 8px;
    border-radius: 6px;
}

.complexity-cell {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
}
.complexity-cell.naive { color: var(--text-muted); }
.complexity-cell.optimal { color: var(--teal); }

.bench-status {
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
}
.bench-status.bench-can-improve { color: var(--accent); }
.bench-status.bench-optimal { color: var(--teal); }

.no-benchmarks {
    text-align: center;
    color: var(--text-muted);
    padding: 30px;
    font-size: 14px;
}

/* ═══════════════════════════════════════════════════════════════
   PEER COMPARISON
   ═══════════════════════════════════════════════════════════════ */
.row-compare { grid-template-columns: 1fr; }

.compare-input-row {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

#compare-input {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: "JetBrains Mono", monospace;
    font-size: 13px;
    outline: none;
    transition: border-color var(--duration);
}
#compare-input:focus { border-color: rgba(255, 161, 22, 0.4); }

.compare-go-btn {
    background: var(--accent);
    color: #000;
    border: none;
    border-radius: 10px;
    padding: 12px 24px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    font-family: "Inter", sans-serif;
}
.compare-go-btn:hover { background: #ffb340; }
.compare-go-btn:active { transform: scale(0.96); }
.compare-go-btn:disabled { opacity: 0.5; cursor: wait; }

.compare-scores {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.compare-user {
    text-align: center;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 24px 32px;
    min-width: 180px;
    flex: 1;
    transition: border-color 0.3s, transform 0.3s;
}
.compare-winner {
    border-color: rgba(44, 187, 93, 0.4) !important;
    background: rgba(44, 187, 93, 0.05);
}
.compare-winner .compare-power { color: var(--teal); }

.compare-name {
    display: block;
    font-family: "JetBrains Mono", monospace;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.compare-power {
    display: block;
    font-family: "JetBrains Mono", monospace;
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
}
.compare-power-label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}
.compare-vs {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-muted);
    letter-spacing: 2px;
    flex-shrink: 0;
}

.compare-stats-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
}
.csg-header {
    background: rgba(255, 255, 255, 0.04);
    padding: 10px 14px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
}
.csg-label {
    padding: 10px 14px;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255,255,255,0.03);
}
.csg-val {
    padding: 10px 14px;
    font-family: "JetBrains Mono", monospace;
    font-size: 14px;
    color: var(--text-primary);
    border-bottom: 1px solid rgba(255,255,255,0.03);
    text-align: center;
}
.csg-lead { color: var(--teal); font-weight: 600; }

.compare-topics { display: flex; flex-direction: column; gap: 6px; }

.ct-row {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 8px;
    align-items: center;
}
.ct-bar-a, .ct-bar-b {
    height: 24px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    padding: 0 8px;
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    font-weight: 600;
    min-width: 24px;
    transition: width 0.8s var(--ease);
}
.ct-bar-a {
    background: rgba(99, 179, 237, 0.2);
    color: rgba(99, 179, 237, 1);
    justify-content: flex-end;
    margin-left: auto;
}
.ct-bar-b {
    background: rgba(255, 161, 22, 0.2);
    color: var(--accent);
    margin-right: auto;
}
.ct-label {
    font-size: 11px;
    color: var(--text-muted);
    text-align: center;
    width: 120px;
    flex-shrink: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ═══════════════════════════════════════════════════════════════
   INTERVIEW ROADMAP
   ═══════════════════════════════════════════════════════════════ */
.row-roadmap { grid-template-columns: 1fr; }

.roadmap-selector select {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 14px;
    color: var(--text-primary);
    font-family: "Inter", sans-serif;
    font-size: 13px;
    outline: none;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23FFA116%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 10px auto;
    padding-right: 32px;
}
.roadmap-selector select option {
    background: #1a1a24;
    color: #e8e8ef;
    padding: 10px;
}
.roadmap-selector select:focus { border-color: rgba(255, 161, 22, 0.4); }

.roadmap-summary {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.roadmap-stat {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    padding: 14px 20px;
    text-align: center;
    min-width: 120px;
    flex: 1;
}
.rs-val {
    display: block;
    font-family: "JetBrains Mono", monospace;
    font-size: 18px;
    font-weight: 600;
    color: var(--accent);
    white-space: nowrap;
}
.rs-lbl {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

.roadmap-sections { display: flex; flex-direction: column; gap: 14px; }

.roadmap-topic {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    transition: border-color var(--duration);
}
.roadmap-topic:hover { border-color: var(--border-hover); }

.rt-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}
.rt-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}
.rt-badge {
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.prio-high { background: rgba(239, 71, 67, 0.12); color: var(--hard); }
.prio-med { background: rgba(255, 161, 22, 0.12); color: var(--accent); }
.prio-low { background: rgba(44, 187, 93, 0.12); color: var(--teal); }

.rt-solved {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    color: var(--text-muted);
    margin-left: auto;
}

.rt-problems {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.rt-problem {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.2s var(--ease);
}
.rt-problem:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}
.rt-diff {
    font-size: 10px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
}
.rt-diff.easy { background: rgba(44, 187, 93, 0.15); color: var(--easy); }
.rt-diff.medium { background: rgba(255, 161, 22, 0.15); color: var(--medium); }
.rt-diff.hard { background: rgba(239, 71, 67, 0.15); color: var(--hard); }

/* ═══════════════════════════════════════════════════════════════
   STUDY PLAN
   ═══════════════════════════════════════════════════════════════ */
.row-studyplan { grid-template-columns: 1fr; }

.studyplan-meta {
    display: flex;
    gap: 8px;
}
.sp-badge {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    padding: 5px 12px;
    border-radius: 8px;
    background: rgba(255, 161, 22, 0.1);
    color: var(--accent);
    font-weight: 500;
}

.sp-weakness-row {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}
.sp-weakness {
    display: flex;
    align-items: center;
    gap: 10px;
}
.sp-w-name {
    font-size: 12px;
    color: var(--text-secondary);
    width: 110px;
    flex-shrink: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sp-w-bar {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 3px;
    overflow: hidden;
}
.sp-w-fill {
    height: 100%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent), var(--teal));
    transition: width 0.8s var(--ease);
}
.sp-w-stat {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    color: var(--text-muted);
    width: 40px;
    text-align: right;
}

.studyplan-days { display: flex; flex-direction: column; gap: 12px; }

.sp-day {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    transition: border-color var(--duration);
}
.sp-day:hover { border-color: var(--border-hover); }

.sp-day-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}
.sp-day-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}
.sp-day-focus {
    font-size: 13px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 6px;
}
.sp-day-gap {
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-left: auto;
}

.gap-critical { background: rgba(239, 71, 67, 0.12); color: var(--hard); }
.gap-moderate { background: rgba(255, 161, 22, 0.12); color: var(--accent); }
.gap-polish { background: rgba(44, 187, 93, 0.12); color: var(--teal); }

.sp-day-problems {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
}
.sp-problem {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.2s var(--ease);
}
.sp-problem:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}

.sp-tips { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.sp-tip {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
    padding: 6px 10px;
    border-radius: 6px;
    background: rgba(255, 161, 22, 0.05);
}

/* ═══════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════ */
.site-footer {
    text-align: center;
    padding: 32px 24px;
    font-size: 13px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
}

/* ═══════════════════════════════════════════════════════════════
   UTILITY CLASSES
   ═══════════════════════════════════════════════════════════════ */
.hidden {
    display: none !important;
}

/* ═══════════════════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════════════════ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

@keyframes countUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
    .row-profile {
        grid-template-columns: 1fr;
    }
    .stats-content {
        gap: 24px;
    }
    .dashboard {
        padding: 24px 20px 60px;
    }
}

@media (max-width: 900px) {
    .row-lang-skill {
        grid-template-columns: 1fr;
    }
    .readiness-gauge-section {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .weakness-indicators {
        grid-template-columns: 1fr;
    }
    .activity-charts {
        grid-template-columns: 1fr;
    }
    .compare-scores {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 34px;
        letter-spacing: -0.5px;
    }
    .hero-sub {
        font-size: 16px;
    }
    .stats-content {
        flex-direction: column;
        text-align: center;
    }
    .donut-container {
        margin: 0 auto;
    }
    .stats-bars {
        width: 100%;
    }
    .company-scores {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
    .compare-stats-grid {
        grid-template-columns: 1fr;
    }
    .csg-header {
        display: none;
    }
    .csg-label {
        font-weight: 700;
        background: rgba(255, 255, 255, 0.05);
        color: var(--accent);
    }
    .csg-val {
        text-align: left;
        padding-left: 20px;
    }
}

@media (max-width: 600px) {
    .header-inner {
        flex-direction: column;
        height: auto;
        padding: 16px 0;
        gap: 16px;
    }
    .search-bar {
        max-width: 100%;
        order: 2;
    }
    .logo {
        order: 1;
    }
    .review-badge {
        order: 3;
    }
    .hero {
        padding: 40px 16px 40px;
    }
    .hero-feat {
        padding: 8px 14px;
        font-size: 13px;
    }
    .dashboard {
        padding: 16px 12px 60px;
        gap: 16px;
    }
    .card {
        padding: 20px 16px;
    }
    .profile-header {
        flex-direction: column;
        text-align: center;
    }
    .profile-details {
        grid-template-columns: 1fr;
    }
    .contest-stats {
        flex-direction: column;
        gap: 12px;
    }
    .contest-stat-item {
        width: 100%;
    }
    .skill-gaps-grid {
        grid-template-columns: 1fr;
    }
    .review-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    .activity-stats-row {
        flex-direction: column;
        gap: 12px;
    }
    .sp-weakness-row {
        grid-template-columns: 1fr;
    }
    .ct-row {
        grid-template-columns: 1fr;
        gap: 4px;
        text-align: center;
    }
    .ct-bar-a, .ct-bar-b {
        margin: 0 auto;
        justify-content: center;
        width: 100% !important;
    }
    .ct-label {
        width: 100%;
        font-weight: 700;
        margin-bottom: 4px;
    }
    .roadmap-topic {
        padding: 12px;
    }
    .rt-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .rt-solved {
        margin-left: 0;
    }
    .submissions-table {
        display: block;
        overflow-x: auto;
    }
    .site-footer {
        padding: 24px 16px;
        font-size: 12px;
    }
}

@media (max-width: 400px) {
    .hero h1 {
        font-size: 28px;
    }
    .gauge-ring {
        width: 130px;
        height: 130px;
    }
    .gauge-value {
        font-size: 24px;
    }
}