/* ===================================
   RESET & VARIABLES
   =================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, opacity 0.3s ease;
}

:root {
    /* Colors */
    --slate-900: #0f172a;
    --slate-800: #1e293b;
    --slate-700: #334155;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --slate-300: #cbd5e1;
    --slate-200: #e2e8f0;
    --slate-100: #f1f5f9;

    --blue-900: #1e3a8a;
    --blue-800: #1e40af;
    --blue-700: #1d4ed8;
    --blue-600: #2563eb;
    --blue-500: #3b82f6;
    --blue-400: #60a5fa;

    --purple-600: #9333ea;
    --purple-500: #a855f7;

    --pink-600: #db2777;
    --pink-500: #ec4899;

    --green-600: #16a34a;
    --green-500: #22c55e;
    --green-400: #4ade80;
    --green-300: #86efac;
    --green-50: #f0fdf4;

    --red-500: #ef4444;

    --yellow-500: #eab308;
    --yellow-300: #fde047;
    --yellow-50: #fefce8;

    --orange-600: #ea580c;
    --orange-500: #f97316;

    --white: #ffffff;
    --black: #000000;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 80px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: var(--slate-900);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-top: 0;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--slate-900) 0%, var(--slate-800) 50%, var(--slate-900) 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    animation: pulse 8s ease-in-out infinite;
}

.glow-blue {
    background: radial-gradient(circle, var(--blue-500) 0%, transparent 70%);
    top: -300px;
    left: -300px;
}

.glow-purple {
    background: radial-gradient(circle, var(--purple-500) 0%, transparent 70%);
    bottom: -300px;
    right: -300px;
    animation-delay: 2s;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.15;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.2;
    }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 0 var(--spacing-lg);
    max-width: 1200px;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 400;
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.02em;
    color: var(--white);
    line-height: 1;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    color: var(--slate-300);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.5;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-3xl);
    left: 50%;
    transform: translateX(-50%);
    background: transparent;
    border: none;
    color: var(--white);
    cursor: pointer;
    animation: bounce 2s infinite;
    transition: color 0.3s ease;
    z-index: 10;
}

.scroll-indicator:hover {
    color: var(--blue-400);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-20px);
    }
    60% {
        transform: translateX(-50%) translateY(-10px);
    }
}

.fade-in {
    animation: fadeIn 1.2s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   INFO SECTION
   =================================== */
.info-section {
    min-height: 100vh;
    background-color: var(--slate-900);
    padding: 5rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 400;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    color: var(--white);
}

.info-blocks {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.info-block {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    border: 1px solid rgba(71, 85, 105, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.info-block:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
}

.slide-in-left {
    animation: slideInLeft 0.8s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.8s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.info-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.info-icon {
    padding: var(--spacing-md);
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-xl);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-icon svg {
    color: var(--blue-400);
    width: 32px;
    height: 32px;
}

.info-title {
    font-size: 1.875rem;
    color: var(--white);
    font-weight: 400;
}

.gafam-logos {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.logo-item {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: rgba(51, 65, 85, 0.6);
    border: 1px solid var(--slate-600);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--slate-300);
    font-size: 1.25rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.logo-item:hover {
    background: rgba(71, 85, 105, 0.8);
    transform: scale(1.05);
}

.info-content {
    color: var(--slate-300);
    line-height: 1.75;
    font-size: 1.0625rem;
}

.data-flow {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    font-size: 0.9375rem;
    color: var(--slate-400);
    flex-wrap: wrap;
}

.flow-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.flow-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    box-shadow: 0 0 8px currentColor;
}

.flow-dot.blue {
    background-color: var(--blue-500);
    color: var(--blue-500);
}

.flow-dot.purple {
    background-color: var(--purple-500);
    color: var(--purple-500);
}

.flow-dot.pink {
    background-color: var(--pink-500);
    color: var(--pink-500);
}

.flow-arrow {
    color: var(--slate-500);
    font-size: 1.25rem;
}

/* ===================================
   QUIZ SECTION
   =================================== */
.quiz-section {
    min-height: 100vh;
    background: linear-gradient(180deg, var(--slate-900) 0%, var(--slate-800) 100%);
    padding: 5rem 0;
}

.quiz-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.quiz-progress {
    color: var(--slate-400);
    font-size: 1.125rem;
    margin-top: var(--spacing-md);
}

.quiz-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.quiz-content {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    border: 1px solid rgba(71, 85, 105, 0.3);
    animation: scaleIn 0.4s ease-out;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.quiz-question {
    font-size: 1.75rem;
    color: var(--white);
    margin-bottom: var(--spacing-xl);
    font-weight: 400;
    line-height: 1.4;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.quiz-option {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: rgba(51, 65, 85, 0.5);
    border: 2px solid var(--slate-600);
    border-radius: var(--radius-xl);
    color: var(--white);
    text-align: left;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1.0625rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.quiz-option:hover:not(:disabled) {
    border-color: var(--blue-500);
    background: rgba(59, 130, 246, 0.1);
    transform: translateX(4px);
}

.quiz-option:disabled {
    cursor: not-allowed;
}

.quiz-option.correct {
    background: rgba(34, 197, 94, 0.15);
    border-color: var(--green-500);
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.2);
}

.quiz-option.incorrect {
    background: rgba(239, 68, 68, 0.15);
    border-color: var(--red-500);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.2);
}

.quiz-option.dimmed {
    opacity: 0.4;
}

.option-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.option-icon.check {
    color: var(--green-500);
}

.option-icon.cross {
    color: var(--red-500);
}

.quiz-explanation {
    padding: var(--spacing-lg);
    background: rgba(51, 65, 85, 0.4);
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-lg);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
        padding: 0;
        margin: 0;
    }
    to {
        opacity: 1;
        max-height: 500px;
    }
}

.quiz-explanation p {
    color: var(--slate-300);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.quiz-next-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 1.75rem;
    background-color: var(--blue-500);
    color: var(--white);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.quiz-next-btn:hover {
    background-color: var(--blue-600);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.quiz-dots {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-top: var(--spacing-xl);
}

.quiz-dot {
    height: 10px;
    width: 10px;
    background-color: var(--slate-600);
    border-radius: var(--radius-full);
    transition: all 0.3s ease;
}

.quiz-dot.active {
    width: 40px;
    background-color: var(--blue-500);
    box-shadow: 0 0 12px var(--blue-500);
}

.quiz-dot.completed {
    background-color: var(--green-500);
}

/* ===================================
   VM SECTION
   =================================== */
.vm-section {
    min-height: 100vh;
    background-color: var(--slate-900);
    padding: 5rem 0;
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.vm-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.vm-subtitle {
    color: var(--slate-400);
    font-size: 1.125rem;
    margin-top: var(--spacing-sm);
}

.vm-container {
    background-color: var(--black);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 4px solid var(--slate-700);
    box-shadow: var(--shadow-2xl);
    transition: all 0.3s ease;
}

.vm-container.fullscreen {
    position: fixed;
    inset: 0;
    z-index: 1000;
    border-radius: 0;
}

.vm-titlebar {
    background: linear-gradient(180deg, var(--slate-800) 0%, #1a2332 100%);
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--slate-700);
}

.vm-title {
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 500;
}

.vm-btn {
    padding: var(--spacing-sm);
    background: transparent;
    border: none;
    color: var(--white);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.vm-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.vm-content {
    height: 700px;
    position: relative;
    overflow: hidden;
}

.vm-container.fullscreen .vm-content {
    height: calc(100vh - 48px);
}

/* VM Login */
.vm-login {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 50%, #1e3a8a 100%);
}

.login-content {
    text-align: center;
}

.user-avatar {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: linear-gradient(135deg, #cbd5e1, #e2e8f0);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    margin: 0 auto 1.5rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.user-name {
    font-size: 2rem;
    color: var(--white);
    margin-bottom: 1.5rem;
    font-weight: 300;
}

#login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    min-width: 300px;
}

.login-input {
    padding: 1rem 1.25rem;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.login-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.login-input:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.2);
}

.login-btn {
    padding: 1rem 1.5rem;
    background-color: rgba(59, 130, 246, 0.9);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.login-btn:hover {
    background-color: var(--blue-600);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* VM Desktop */
.vm-desktop {
    height: 100%;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 40%, #9333ea 100%);
    padding: var(--spacing-lg);
    position: relative;
}

.desktop-icons {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    width: 140px;
}

.desktop-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: transparent;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.desktop-icon:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.icon-image {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-lg);
}

.snake-icon {
    background-color: var(--green-500);
}

.pc-icon {
    background-color: var(--blue-600);
}

.trash-icon {
    background-color: var(--red-500);
}

.icon-image svg {
    width: 32px;
    height: 32px;
    stroke: var(--white);
}

.trash-icon svg {
    stroke: var(--white);
}

.check-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    margin-right: 0.75rem;
    flex-shrink: 0;
}

.check-icon svg {
    stroke: var(--green-600);
}

.icon-label {
    color: var(--white);
    font-size: 0.875rem;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 500;
}

/* Taskbar */
.taskbar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(71, 85, 105, 0.5);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}

.taskbar-start {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.windows-btn {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.windows-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.taskbar-time {
    color: var(--white);
    font-size: 0.9375rem;
    font-weight: 500;
}

.activation-watermark {
    position: absolute;
    bottom: 70px;
    right: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.875rem;
    text-align: right;
    pointer-events: none;
}

.watermark-small {
    font-size: 0.75rem;
    margin-top: 2px;
}

/* Windows Popup */
.windows-popup {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 200;
    width: 90%;
    max-width: 450px;
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2xl);
    animation: popIn 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.windows-popup.wide {
    max-width: 850px;
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.popup-titlebar {
    background: linear-gradient(180deg, #f1f5f9, #e2e8f0);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--slate-300);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.popup-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
    color: #0f172a;
    font-weight: 500;
}

.popup-close {
    padding: var(--spacing-xs);
    background: transparent;
    border: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.popup-close:hover {
    background-color: var(--red-500);
}

.popup-close:hover svg {
    color: var(--white);
}

.popup-close svg {
    color: #475569;
    transition: color 0.2s ease;
}

.popup-content {
    padding: var(--spacing-xl);
    color: #1e293b;
}

.popup-content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.popup-content .small-text {
    font-size: 0.875rem;
    color: var(--slate-600);
}

.popup-tip {
    background-color: var(--yellow-50);
    border: 1px solid var(--yellow-300);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    font-size: 0.9375rem;
}

.popup-alternative {
    background-color: var(--green-50);
    border: 1px solid var(--green-300);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    font-size: 0.9375rem;
}

.popup-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.popup-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.popup-btn.primary {
    background-color: var(--blue-500);
    color: var(--white);
}

.popup-btn.primary:hover {
    background-color: var(--blue-600);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.popup-btn.secondary {
    background-color: var(--slate-300);
    color: #334155;
}

.popup-btn.secondary:hover {
    background-color: var(--slate-400);
}

.popup-btn.orange {
    background-color: var(--orange-500);
    color: var(--white);
}

.popup-btn.orange:hover {
    background-color: var(--orange-600);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Snake Game */
#snake-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.snake-header {
    display: flex;
    justify-content: space-between;
    width: 100%;
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e293b;
}

.snake-info {
    font-size: 0.875rem;
    color: var(--slate-600);
    text-align: center;
}

.snake-canvas {
    background-color: #1e293b;
    border: 3px solid var(--slate-600);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.snake-controls {
    font-size: 0.875rem;
    color: var(--slate-600);
    text-align: center;
}

.snake-gameover {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    border-radius: var(--radius-md);
}

.gameover-text {
    font-size: 2rem;
    color: var(--white);
    font-weight: 600;
}

.gameover-score {
    color: var(--white);
    font-size: 1.25rem;
}

.replay-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--green-500);
    color: var(--white);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.replay-btn:hover {
    background-color: var(--green-600);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4);
}

/* Linux Info */
.linux-info {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(59, 130, 246, 0.1));
    border-radius: var(--radius-2xl);
    border: 2px solid rgba(34, 197, 94, 0.3);
}

.linux-title {
    font-size: 1.875rem;
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    font-weight: 400;
}

.linux-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    color: var(--slate-300);
    font-size: 1.0625rem;
}

.linux-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    line-height: 1.6;
}

.check-icon {
    color: var(--green-500);
    flex-shrink: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.linux-cta {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: rgba(30, 41, 59, 0.6);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(71, 85, 105, 0.3);
}

.linux-cta p {
    color: var(--white);
    line-height: 1.6;
}

/* Fade-in on scroll */
.fade-in-view {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-view.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .info-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .quiz-question {
        font-size: 1.375rem;
    }

    .vm-content {
        height: 500px;
    }

    .data-flow {
        font-size: 0.8125rem;
    }
}

@media (min-width: 768px) {
    .info-block:nth-child(even) {
        animation-delay: 0.1s;
    }
}

/* ===================================
   HEADER NAVIGATION
   =================================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
    transition: all 0.3s ease;
}

.main-header::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--blue-500), transparent);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--white);
}

.logo-icon {
    width: 56px;
    height: 56px;
    object-fit: contain;
}

.header-nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--slate-300);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--blue-400);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--blue-400);
}

.nav-link:hover::after {
    width: 100%;
}

/* ===================================
   GAFAM LOGOS ENHANCED
   =================================== */
.gafam-logos-enhanced {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 1rem;
    margin: 2rem 0;
    padding: 2rem 1rem;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.1), rgba(147, 51, 234, 0.1));
    border-radius: var(--radius-xl);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.logo-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    transition: transform 0.3s ease;
}

.logo-card:hover {
    transform: translateY(-8px);
}

.logo-letter {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.logo-letter:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-2xl);
}

.logo-letter.google {
    background: linear-gradient(135deg, #4285f4, #34a853);
    color: white;
}

.logo-letter.apple {
    background: linear-gradient(135deg, #555, #000);
    color: white;
}

.logo-letter.facebook {
    background: linear-gradient(135deg, #1877f2, #0c63d4);
    color: white;
}

.logo-letter.amazon {
    background: linear-gradient(135deg, #ff9900, #e67e00);
    color: white;
}

.logo-letter.microsoft {
    background: linear-gradient(135deg, #00a4ef, #0078d4);
    color: white;
}

.logo-name {
    font-size: 0.875rem;
    color: var(--slate-400);
    font-weight: 500;
}

/* ===================================
   GAFAM TEXT STYLING
   =================================== */
.gafam-text {
    line-height: 1.8;
    margin-top: 2rem;
}

.gafam-text p {
    margin-bottom: var(--spacing-md);
    color: var(--slate-300);
}

.gafam-intro {
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

.powers-intro {
    margin-top: var(--spacing-xl);
    color: var(--slate-200);
    font-weight: 500;
}

.powers-list {
    margin: var(--spacing-lg) 0;
    padding-left: var(--spacing-xl);
    list-style: none;
}

.powers-list li {
    position: relative;
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    color: var(--slate-200);
}

.powers-list li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--blue-400);
    font-weight: bold;
    font-size: 1.25rem;
}

.power-detail {
    color: var(--slate-400);
    font-size: 0.9375rem;
}

.big-data-quote {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--blue-500);
    border-radius: var(--radius-md);
    font-style: italic;
    color: var(--slate-200);
}

.final-quote {
    margin-top: var(--spacing-lg);
    font-size: 1.125rem;
    text-align: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(220, 38, 38, 0.15));
    border-radius: var(--radius-lg);
    color: var(--white);
}

/* ===================================
   QUIZ DESCRIPTION
   =================================== */
.quiz-description {
    font-size: 1.125rem;
    color: var(--slate-300);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    font-style: italic;
}

/* ===================================
   FOOTER STYLES - IMPROVED
   =================================== */
.footer {
    background: linear-gradient(to bottom, var(--slate-900), #0a0f1e);
    padding: 4rem 0 3rem;
    border-top: 2px solid var(--blue-600);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--blue-400), var(--purple-500), transparent);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.footer-grid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-logo-icon {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.footer-tagline {
    color: var(--slate-300);
    line-height: 1.8;
}

.footer-tagline strong {
    color: var(--blue-400);
}

.footer-heading {
    font-size: 1.25rem;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.team-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--green-400);
    margin-bottom: 1rem;
}

.team-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.team-member {
    display: flex;
    align-items: center;
    padding: 0.875rem 1rem;
    background: rgba(30, 41, 59, 0.4);
    border-radius: var(--radius-md);
    border: 1px solid var(--slate-700);
    transition: all 0.3s ease;
    position: relative;
}

.team-member::before {
    content: "▸";
    color: var(--blue-400);
    font-size: 1.25rem;
    margin-right: 0.75rem;
    font-weight: bold;
}

.team-member:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--blue-500);
    transform: translateX(5px);
}

.member-name {
    color: var(--slate-300);
    font-size: 0.9375rem;
    font-weight: 500;
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-link {
    color: var(--slate-400);
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 0.5rem 0;
    position: relative;
    display: inline-block;
    width: fit-content;
}

.footer-link::before {
    content: "→";
    margin-right: 0.5rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
    color: var(--blue-400);
}

.footer-link:hover::before {
    opacity: 1;
    transform: translateX(0);
}

.footer-link:hover {
    color: var(--blue-400);
    padding-left: 1.5rem;
}

@media (max-width: 768px) {
    .header-nav {
        gap: 1rem;
    }

    .nav-link {
        font-size: 0.875rem;
    }

    .gafam-logos-enhanced {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .logo-letter {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 640px) {
    .header-container {
        flex-direction: column;
        gap: 1rem;
        padding: 0.75rem 1rem;
    }

    .header-nav {
        width: 100%;
        justify-content: space-around;
        gap: 0.5rem;
    }

    .nav-link {
        font-size: 0.8125rem;
    }
}