/* ============================================
   🔥 EXAMINATION SYSTEM - BLAZE THEME
   Bold · Energetic · Neumorphism-Lite
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:wght@300;400;500;600&display=swap');

/* ===== ROOT VARIABLES ===== */
:root {
    /* Core Palette */
    --fire-100: #fff3ed;
    --fire-200: #ffe4d0;
    --fire-300: #ffb899;
    --fire-400: #ff8c5a;
    --fire-500: #ff5722;
    --fire-600: #e64019;
    --fire-700: #c02e0d;
    --ember-400: #ff7043;
    --ember-500: #f4511e;
    --crimson-400: #ef5350;
    --crimson-500: #e53935;
    --crimson-600: #c62828;
    --gold-400: #ffca28;
    --gold-500: #f9a825;
    /* Neumorphism Base */
    --neu-bg: #f5ede8;
    --neu-shadow-light: rgba(255, 255, 255, 0.85);
    --neu-shadow-dark: rgba(190, 130, 110, 0.45);
    --neu-shadow: 6px 6px 16px var(--neu-shadow-dark), -6px -6px 16px var(--neu-shadow-light);
    --neu-shadow-inset: inset 4px 4px 10px var(--neu-shadow-dark), inset -4px -4px 10px var(--neu-shadow-light);
    --neu-shadow-hover: 10px 10px 28px var(--neu-shadow-dark), -10px -10px 28px var(--neu-shadow-light);
    /* Gradients */
    --grad-fire: linear-gradient(135deg, #ff8c5a 0%, #ff5722 50%, #e53935 100%);
    --grad-ember: linear-gradient(135deg, #ffca28 0%, #ff7043 60%, #f4511e 100%);
    --grad-crimson: linear-gradient(135deg, #ef5350 0%, #c62828 100%);
    --grad-warm: linear-gradient(135deg, #ff8a65 0%, #ff5722 100%);
    --grad-success: linear-gradient(135deg, #66bb6a 0%, #2e7d32 100%);
    --grad-info: linear-gradient(135deg, #42a5f5 0%, #1565c0 100%);
    --grad-gold: linear-gradient(135deg, #ffe082 0%, #f9a825 100%);
    /* Typography */
    --font-display: 'Syne', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    /* Radii */
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-xl: 30px;
    /* Transitions */
    --transition-smooth: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-fast: all 0.2s ease;
}

/* ===== GLOBAL BASE ===== */
* {
    font-family: var(--font-body) !important;
}

h1, h2, h3, h4, h5, h6,
.mud-typography-h1, .mud-typography-h2, .mud-typography-h3,
.mud-typography-h4, .mud-typography-h5, .mud-typography-h6 {
    font-family: var(--font-display) !important;
    font-weight: 700 !important;
}

body, .mud-layout {
    background-color: var(--neu-bg) !important;
}

/* ===== GLOBAL ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-24px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(24px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.88);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes flamePulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 87, 34, 0.35);
    }

    70% {
        box-shadow: 0 0 0 12px rgba(255, 87, 34, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(255, 87, 34, 0);
    }
}

@keyframes gradientFlow {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-8px);
    }

    100% {
        transform: translateY(0px);
    }
}

@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(8px) scale(0.9);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes burnIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
        filter: blur(4px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
        filter: blur(0);
    }
}

/* ===== ANIMATED CLASSES ===== */
.animate-fade-in-up {
    animation: fadeInUp 0.55s ease-out forwards;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.55s ease-out forwards;
}

.animate-fade-in-right {
    animation: fadeInRight 0.55s ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn 0.45s ease-out forwards;
}

.animate-slide-down {
    animation: slideDown 0.35s ease-out forwards;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.delay-1 {
    animation-delay: 0.08s;
    opacity: 0;
}

.delay-2 {
    animation-delay: 0.16s;
    opacity: 0;
}

.delay-3 {
    animation-delay: 0.24s;
    opacity: 0;
}

.delay-4 {
    animation-delay: 0.32s;
    opacity: 0;
}

.delay-5 {
    animation-delay: 0.40s;
    opacity: 0;
}

.delay-6 {
    animation-delay: 0.48s;
    opacity: 0;
}

/* ===== APP BAR ===== */
.mud-appbar {
    background: var(--grad-fire) !important;
    background-size: 200% 200% !important;
    animation: gradientFlow 6s ease infinite !important;
    box-shadow: 0 4px 24px rgba(229, 57, 53, 0.4) !important;
    border-bottom: 2px solid rgba(255,255,255,0.15) !important;
}

    .mud-appbar .mud-typography {
        font-family: var(--font-display) !important;
        font-weight: 800 !important;
        letter-spacing: 1.5px !important;
        text-shadow: 0 2px 8px rgba(0,0,0,0.25) !important;
    }

/* ===== DRAWER / SIDEBAR ===== */
.mud-drawer {
    background: var(--neu-bg) !important;
    border-right: none !important;
    box-shadow: 4px 0 20px rgba(190, 130, 110, 0.2) !important;
}

.mud-nav-link {
    border-radius: var(--radius-md) !important;
    margin: 5px 10px !important;
    font-weight: 500 !important;
    font-family: var(--font-body) !important;
    transition: var(--transition-smooth) !important;
    box-shadow: none !important;
}

    .mud-nav-link:hover {
        background: rgba(255, 87, 34, 0.09) !important;
        transform: translateX(6px) !important;
        box-shadow: var(--neu-shadow) !important;
        color: var(--fire-500) !important;
    }

    .mud-nav-link.active {
        background: var(--grad-fire) !important;
        color: white !important;
        box-shadow: 4px 4px 14px rgba(255, 87, 34, 0.4), -2px -2px 8px rgba(255,255,255,0.5) !important;
        transform: translateX(4px) !important;
    }

        .mud-nav-link.active .mud-nav-link-icon {
            color: white !important;
        }

.mud-navgroup-title {
    font-family: var(--font-display) !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    font-size: 0.72rem !important;
    letter-spacing: 2px !important;
    color: var(--fire-600) !important;
    padding-left: 16px !important;
}

/* ===== CARDS ===== */
.mud-card {
    background: var(--neu-bg) !important;
    border-radius: var(--radius-lg) !important;
    border: none !important;
    box-shadow: var(--neu-shadow) !important;
    transition: var(--transition-smooth) !important;
    overflow: hidden !important;
}

    .mud-card:hover {
        box-shadow: var(--neu-shadow-hover) !important;
        transform: translateY(-6px) !important;
    }

/* ===== STAT CARDS (Dashboard) ===== */
.stat-card {
    border-radius: var(--radius-xl) !important;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: var(--neu-shadow) !important;
    border: none !important;
}

    /* Sheen sweep on hover */
    .stat-card::after {
        content: '';
        position: absolute;
        top: -60%;
        left: -60%;
        width: 60%;
        height: 200%;
        background: linear-gradient(105deg, rgba(255,255,255,0) 40%, rgba(255,255,255,0.22) 50%, rgba(255,255,255,0) 60%);
        transform: skewX(-20deg);
        transition: left 0.55s ease;
    }

    .stat-card:hover::after {
        left: 140%;
    }

    .stat-card:hover {
        transform: translateY(-8px) scale(1.025) !important;
        box-shadow: var(--neu-shadow-hover) !important;
    }

.stat-card-primary {
    background: var(--grad-fire) !important;
    color: white !important;
}

.stat-card-secondary {
    background: var(--grad-ember) !important;
    color: white !important;
}

.stat-card-success {
    background: var(--grad-success) !important;
    color: white !important;
}

.stat-card-warning {
    background: var(--grad-gold) !important;
    color: #5d3400 !important;
}

.stat-card-info {
    background: var(--grad-info) !important;
    color: white !important;
}

.stat-card-error {
    background: var(--grad-crimson) !important;
    color: white !important;
}

.stat-card .stat-number {
    font-family: var(--font-display) !important;
    font-size: 2.6rem !important;
    font-weight: 800 !important;
    text-shadow: 0 2px 12px rgba(0,0,0,0.18);
    animation: countUp 0.7s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.stat-card .stat-label {
    font-family: var(--font-body) !important;
    font-size: 0.82rem !important;
    font-weight: 600 !important;
    opacity: 0.88;
    text-transform: uppercase;
    letter-spacing: 1.2px;
}

.stat-card .stat-icon {
    font-size: 3.2rem !important;
    opacity: 0.22;
    position: absolute;
    right: 18px;
    bottom: 12px;
}

/* ===== EXAM CARDS (Student) ===== */
.exam-card {
    border-radius: var(--radius-xl) !important;
    border: none !important;
    position: relative;
    overflow: hidden;
    background: var(--neu-bg) !important;
    box-shadow: var(--neu-shadow) !important;
    transition: var(--transition-smooth) !important;
}

    /* Left accent stripe */
    .exam-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        width: 5px;
        background: var(--grad-fire);
        border-radius: var(--radius-xl) 0 0 var(--radius-xl);
        transition: width 0.3s ease;
    }

    .exam-card:hover::before {
        width: 8px;
    }

    .exam-card:hover {
        transform: translateY(-10px) !important;
        box-shadow: var(--neu-shadow-hover) !important;
    }

    .exam-card .exam-subject-badge {
        background: var(--grad-fire);
        color: white;
        padding: 5px 15px;
        border-radius: 20px;
        font-size: 0.78rem;
        font-weight: 700;
        letter-spacing: 0.8px;
        display: inline-block;
        margin-bottom: 12px;
        box-shadow: 0 4px 14px rgba(255, 87, 34, 0.35);
        text-transform: uppercase;
    }

    .exam-card .exam-info-item {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 6px 0;
        color: #6b4a3f;
        font-size: 0.88rem;
        font-weight: 500;
    }

        .exam-card .exam-info-item .mud-icon-root {
            color: var(--fire-500) !important;
        }

/* ===== BUTTONS ===== */
.mud-button-root.mud-button-filled {
    border-radius: var(--radius-md) !important;
    text-transform: none !important;
    font-family: var(--font-body) !important;
    font-weight: 600 !important;
    letter-spacing: 0.4px !important;
    transition: var(--transition-smooth) !important;
    box-shadow: var(--neu-shadow) !important;
}

    .mud-button-root.mud-button-filled:hover {
        transform: translateY(-3px) !important;
        box-shadow: var(--neu-shadow-hover) !important;
    }

    .mud-button-root.mud-button-filled:active {
        transform: translateY(1px) !important;
        box-shadow: var(--neu-shadow-inset) !important;
    }

.btn-gradient-primary {
    background: var(--grad-fire) !important;
    color: white !important;
    border: none !important;
    box-shadow: 4px 4px 14px rgba(255, 87, 34, 0.4), -2px -2px 8px rgba(255,255,255,0.6) !important;
}

.btn-start-exam {
    background: var(--grad-fire) !important;
    color: white !important;
    border-radius: var(--radius-lg) !important;
    padding: 12px 28px !important;
    font-family: var(--font-display) !important;
    font-size: 0.95rem !important;
    font-weight: 700 !important;
    letter-spacing: 0.5px !important;
    box-shadow: 6px 6px 18px rgba(255, 87, 34, 0.4), -3px -3px 10px rgba(255,255,255,0.65) !important;
    transition: var(--transition-smooth) !important;
    animation: flamePulse 2.4s infinite;
}

    .btn-start-exam:hover {
        transform: translateY(-4px) scale(1.04) !important;
        box-shadow: 10px 10px 28px rgba(255, 87, 34, 0.5), -4px -4px 14px rgba(255,255,255,0.7) !important;
        animation: none !important;
    }

/* ===== TABLES ===== */
.mud-table {
    border-radius: var(--radius-lg) !important;
    overflow: hidden !important;
    box-shadow: var(--neu-shadow) !important;
    border: none !important;
    background: var(--neu-bg) !important;
}

.mud-table-head .mud-table-cell {
    background: var(--grad-fire) !important;
    color: white !important;
    font-family: var(--font-display) !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    font-size: 0.72rem !important;
    letter-spacing: 1.5px !important;
    padding: 16px 18px !important;
}

.mud-table-body .mud-table-row {
    transition: var(--transition-fast) !important;
}

    .mud-table-body .mud-table-row:hover {
        background: rgba(255, 87, 34, 0.06) !important;
        transform: scale(1.003) !important;
    }

.mud-table-body .mud-table-cell {
    padding: 14px 18px !important;
    border-bottom: 1px solid rgba(190, 130, 110, 0.15) !important;
    color: #4a2e26 !important;
    font-weight: 400 !important;
}

/* ===== CHIPS ===== */
.mud-chip {
    border-radius: var(--radius-sm) !important;
    font-weight: 600 !important;
    font-family: var(--font-body) !important;
    box-shadow: 3px 3px 8px var(--neu-shadow-dark), -3px -3px 8px var(--neu-shadow-light) !important;
    transition: var(--transition-fast) !important;
}

    .mud-chip:hover {
        box-shadow: 5px 5px 14px var(--neu-shadow-dark), -5px -5px 14px var(--neu-shadow-light) !important;
    }

.chip-pass {
    background: var(--grad-success) !important;
    color: white !important;
    box-shadow: 3px 3px 10px rgba(46, 125, 50, 0.35) !important;
}

.chip-fail {
    background: var(--grad-crimson) !important;
    color: white !important;
    box-shadow: 3px 3px 10px rgba(198, 40, 40, 0.35) !important;
}

/* ===== HOME PAGE ===== */
.home-hero {
    background: var(--grad-fire) !important;
    background-size: 200% 200% !important;
    animation: gradientFlow 7s ease infinite !important;
    border-radius: var(--radius-xl) !important;
    padding: 64px 48px !important;
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: 8px 8px 24px rgba(229, 57, 53, 0.35), -4px -4px 16px rgba(255, 200, 170, 0.5) !important;
}

    /* Decorative orbs */
    .home-hero::before {
        content: '';
        position: absolute;
        top: -80px;
        right: -80px;
        width: 260px;
        height: 260px;
        background: rgba(255, 255, 255, 0.12);
        border-radius: 50%;
        filter: blur(2px);
    }

    .home-hero::after {
        content: '';
        position: absolute;
        bottom: -60px;
        left: -40px;
        width: 180px;
        height: 180px;
        background: rgba(255, 202, 40, 0.18);
        border-radius: 50%;
        filter: blur(4px);
    }

    .home-hero h3 {
        font-family: var(--font-display) !important;
        font-size: 2.6rem !important;
        font-weight: 800 !important;
        margin-bottom: 14px !important;
        text-shadow: 0 3px 12px rgba(0,0,0,0.2);
        letter-spacing: -0.5px !important;
    }

    .home-hero p {
        font-size: 1.15rem !important;
        opacity: 0.92;
        max-width: 500px;
        margin: 0 auto;
        font-weight: 400 !important;
        line-height: 1.7 !important;
    }

/* ===== TIMER (Take Exam) ===== */
.timer-chip {
    font-family: var(--font-display) !important;
    font-size: 1.4rem !important;
    font-weight: 800 !important;
    padding: 10px 26px !important;
    border-radius: var(--radius-md) !important;
    background: var(--neu-bg) !important;
    color: var(--fire-600) !important;
    box-shadow: var(--neu-shadow) !important;
    animation: flamePulse 2s infinite;
    letter-spacing: 1px !important;
}

.timer-danger {
    background: var(--grad-crimson) !important;
    color: white !important;
    animation: flamePulse 0.6s infinite !important;
    box-shadow: 0 0 0 0 rgba(229, 57, 53, 0.5) !important;
}

/* ===== INPUT FIELDS ===== */
.mud-input-root {
    border-radius: var(--radius-md) !important;
}

.mud-input-outlined .mud-input-outlined-border {
    border-radius: var(--radius-md) !important;
    border-color: rgba(190, 130, 110, 0.3) !important;
    transition: var(--transition-fast) !important;
}

.mud-input-outlined:hover .mud-input-outlined-border {
    border-color: var(--fire-400) !important;
}

.mud-input-outlined.mud-focused .mud-input-outlined-border {
    border-color: var(--fire-500) !important;
    box-shadow: 0 0 0 3px rgba(255, 87, 34, 0.15) !important;
}

.mud-input-label.mud-focused {
    color: var(--fire-500) !important;
}

/* ===== PAGE CONTAINER ===== */
.page-container {
    animation: burnIn 0.5s ease-out;
    background: var(--neu-bg);
}

/* ===== LOADING CONTAINER ===== */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    animation: fadeInUp 0.5s ease-out;
}

/* ===== PROGRESS BARS ===== */
.mud-progress-linear-bar {
    background: var(--grad-fire) !important;
}

/* ===== ALERTS / SNACKBARS ===== */
.mud-snackbar {
    border-radius: var(--radius-md) !important;
    font-family: var(--font-body) !important;
    font-weight: 500 !important;
    box-shadow: var(--neu-shadow-hover) !important;
}

/* ===== DIALOG ===== */
.mud-dialog {
    border-radius: var(--radius-xl) !important;
    background: var(--neu-bg) !important;
    box-shadow: 16px 16px 40px rgba(190, 130, 110, 0.4), -8px -8px 24px rgba(255, 255, 255, 0.8) !important;
}

.mud-dialog-title {
    font-family: var(--font-display) !important;
    font-weight: 700 !important;
    color: var(--fire-700) !important;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 7px;
}

::-webkit-scrollbar-track {
    background: var(--fire-100);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--grad-fire);
    border-radius: 10px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: var(--grad-ember);
    }

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
    .stat-card .stat-number {
        font-size: 1.9rem !important;
    }

    .home-hero {
        padding: 32px 22px !important;
    }

        .home-hero h3 {
            font-size: 1.7rem !important;
        }

    .mud-drawer {
        box-shadow: none !important;
    }
}