/* =====================================================
   SENTIDO DE VIDA - Premium Dark Cinematic Design
   Enhanced Luxury Version
   ===================================================== */

/* ------------------- IMPORTS ------------------- */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Barlow:wght@300;400;500;600;700&display=swap');

/* ------------------- CSS Variables ------------------- */
:root {
    /* Colors */
    --color-black: #050505;
    --color-dark: #0a0a0a;
    --color-dark-elevated: #121212;
    --color-dark-glass: rgba(10, 10, 10, 0.9);
    --color-white: #ffffff;
    --color-white-dim: rgba(255, 255, 255, 0.9);
    --color-white-muted: rgba(255, 255, 255, 0.7);
    --color-white-subtle: rgba(255, 255, 255, 0.5);
    --color-white-faint: rgba(255, 255, 255, 0.3);
    --color-white-minimal: rgba(255, 255, 255, 0.1);
    --color-gold: #d4af37;
    --color-gold-dim: rgba(212, 175, 55, 0.6);
    --color-accent: rgba(255, 255, 255, 0.08);

    /* Glass effects */
    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-bg-strong: rgba(255, 255, 255, 0.06);
    --glass-bg-luxury: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-border-strong: rgba(255, 255, 255, 0.12);
    --glass-border-gold: rgba(212, 175, 55, 0.3);
    --glass-blur: 30px;
    --glass-blur-strong: 50px;

    /* Gradients */
    --gradient-dark: linear-gradient(135deg, #050505 0%, #0a0a0a 50%, #121212 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.01) 100%);
    --gradient-glow: radial-gradient(ellipse at center, rgba(255,255,255,0.12) 0%, transparent 70%);
    --gradient-gold: linear-gradient(135deg, rgba(212,175,55,0.3) 0%, rgba(212,175,55,0.05) 100%);
    --gradient-mesh: radial-gradient(at 40% 20%, rgba(255,255,255,0.05) 0px, transparent 50%),
                     radial-gradient(at 80% 0%, rgba(255,255,255,0.03) 0px, transparent 50%),
                     radial-gradient(at 0% 50%, rgba(255,255,255,0.04) 0px, transparent 50%),
                     radial-gradient(at 80% 50%, rgba(212,175,55,0.05) 0px, transparent 50%),
                     radial-gradient(at 0% 100%, rgba(255,255,255,0.03) 0px, transparent 50%);

    /* Shadows */
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.7);
    --shadow-xl: 0 16px 80px rgba(0, 0, 0, 0.8);
    --shadow-glow: 0 0 60px rgba(255, 255, 255, 0.08);
    --shadow-gold: 0 0 40px rgba(212, 175, 55, 0.2);

    /* Typography */
    --font-heading: 'Instrument Serif', Georgia, serif;
    --font-body: 'Barlow', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 5rem;
    --space-4xl: 8rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 600ms cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-luxury: 800ms cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

body {
    font-family: var(--font-body);
    background: var(--color-black);
    color: var(--color-white);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Animated mesh background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-mesh);
    pointer-events: none;
    z-index: -1;
    animation: meshShift 30s ease-in-out infinite;
}

@keyframes meshShift {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.02); }
}

/* Subtle grain texture */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.02;
    pointer-events: none;
    z-index: -1;
}

/* ------------------- Typography ------------------- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-style: italic;
    font-weight: 400;
    line-height: 1.15;
    color: var(--color-white);
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 5rem);
    line-height: 1.1;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

p {
    font-size: 1.05rem;
    color: var(--color-white-muted);
    line-height: 1.8;
}

a {
    color: var(--color-white);
    text-decoration: none;
    transition: all var(--transition-base);
}

a:hover {
    color: var(--color-white-subtle);
}

/* ------------------- Layout ------------------- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.container-narrow {
    max-width: 520px;
}

.container-medium {
    max-width: 760px;
}

/* ------------------- Glass Effects ------------------- */
.liquid-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.liquid-glass:hover {
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-strong);
    box-shadow: var(--shadow-lg);
}

.liquid-glass-strong {
    background: var(--glass-bg-luxury);
    backdrop-filter: blur(var(--glass-blur-strong));
    -webkit-backdrop-filter: blur(var(--glass-blur-strong));
    border: 1px solid var(--glass-border-strong);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.liquid-glass-gold {
    background: var(--glass-bg-luxury);
    backdrop-filter: blur(var(--glass-blur-strong));
    -webkit-backdrop-filter: blur(var(--glass-blur-strong));
    border: 1px solid var(--glass-border-gold);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl), var(--shadow-gold);
}

/* ------------------- Buttons ------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn-primary {
    background: var(--color-white);
    color: var(--color-black);
    box-shadow: 0 4px 20px rgba(255,255,255,0.2), 0 0 40px rgba(255,255,255,0.1);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255,255,255,0.3), 0 0 60px rgba(255,255,255,0.15);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border: 1px solid var(--glass-border-strong);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--glass-bg);
    border-color: var(--color-white-subtle);
    transform: translateY(-2px);
}

.btn-gold {
    background: var(--gradient-gold);
    color: var(--color-gold);
    border: 1px solid var(--glass-border-gold);
    box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
    background: rgba(212, 175, 55, 0.15);
    border-color: var(--color-gold-dim);
    transform: translateY(-2px);
    box-shadow: 0 8px 40px rgba(212, 175, 55, 0.3);
}

.btn-ghost {
    background: transparent;
    color: var(--color-white-muted);
}

.btn-ghost:hover {
    color: var(--color-white);
    background: var(--glass-bg);
}

.btn-large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1rem;
}

.btn-full {
    width: 100%;
}

.btn-small {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.85rem;
}

/* ------------------- Form Elements ------------------- */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-white-subtle);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.form-input {
    width: 100%;
    padding: var(--space-lg);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-white);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    outline: none;
}

.form-input::placeholder {
    color: var(--color-white-faint);
}

.form-input:hover {
    border-color: var(--glass-border-strong);
    background: var(--glass-bg-strong);
}

.form-input:focus {
    border-color: var(--color-white-subtle);
    background: var(--glass-bg-strong);
    box-shadow: 0 0 0 4px rgba(255,255,255,0.05), 0 0 30px rgba(255,255,255,0.1);
}

.form-input.error {
    border-color: rgba(255, 100, 100, 0.5);
    box-shadow: 0 0 30px rgba(255, 100, 100, 0.1);
}

.form-error {
    margin-top: var(--space-xs);
    font-size: 0.85rem;
    color: rgba(255, 100, 100, 0.8);
}

/* ------------------- Cards ------------------- */
.card {
    padding: var(--space-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-luxury);
}

.card:hover {
    transform: translateY(-6px);
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-strong);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.card-luxury {
    padding: var(--space-2xl);
    background: var(--glass-bg-luxury);
    backdrop-filter: blur(var(--glass-blur-strong));
    -webkit-backdrop-filter: blur(var(--glass-blur-strong));
    border: 1px solid var(--glass-border-strong);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

/* ------------------- Navigation ------------------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-lg) 0;
    transition: all var(--transition-base);
}

.nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-dark-glass);
    backdrop-filter: blur(var(--glass-blur-strong));
    -webkit-backdrop-filter: blur(var(--glass-blur-strong));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.nav.scrolled::before {
    opacity: 1;
}

.nav.scrolled {
    border-bottom: 1px solid var(--glass-border);
}

.nav-content {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--color-white);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--color-white-muted);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-white);
    transition: width var(--transition-base);
}

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

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

/* ------------------- Hero Section ------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl) 0 var(--space-3xl);
    position: relative;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    position: relative;
    z-index: 1;
}

.hero-title {
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fadeInUp 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--color-white-muted);
    margin-bottom: var(--space-2xl);
    opacity: 0;
    animation: fadeInUp 1.2s cubic-bezier(0.22, 1, 0.36, 1) 0.2s forwards;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 1.2s cubic-bezier(0.22, 1, 0.36, 1) 0.4s forwards;
}

/* Floating orbs */
.hero-orb {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.08) 0%, transparent 60%);
    filter: blur(60px);
    animation: float 25s ease-in-out infinite;
    pointer-events: none;
}

.hero-orb-1 {
    width: 500px;
    height: 500px;
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.hero-orb-2 {
    width: 400px;
    height: 400px;
    bottom: -5%;
    right: -5%;
    animation-delay: -8s;
}

.hero-orb-3 {
    width: 300px;
    height: 300px;
    top: 40%;
    left: 60%;
    animation-delay: -16s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(40px, -40px) scale(1.08); }
    50% { transform: translate(-30px, 30px) scale(0.95); }
    75% { transform: translate(30px, 40px) scale(1.05); }
}

/* ------------------- Animations ------------------- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.92);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes glow {
    0%, 100% { box-shadow: var(--shadow-md), 0 0 30px rgba(255,255,255,0.08); }
    50% { box-shadow: var(--shadow-lg), 0 0 50px rgba(255,255,255,0.15); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.03); }
}

.animate-fade-in { animation: fadeIn 0.8s ease-out forwards; }
.animate-fade-in-up { animation: fadeInUp 0.8s ease-out forwards; }
.animate-fade-in-down { animation: fadeInDown 0.8s ease-out forwards; }
.animate-slide-in-left { animation: slideInLeft 0.8s ease-out forwards; }
.animate-slide-in-right { animation: slideInRight 0.8s ease-out forwards; }
.animate-scale-in { animation: scaleIn 0.6s ease-out forwards; }

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* ------------------- Page Transitions ------------------- */
.page-transition {
    animation: pageEnter 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

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

/* ------------------- Loading Spinner ------------------- */
.spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--glass-border);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ------------------- Progress Bar ------------------- */
.progress-container {
    width: 100%;
    height: 3px;
    background: var(--glass-bg);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-white) 0%, var(--color-white-subtle) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    box-shadow: 0 0 20px rgba(255,255,255,0.4);
}

/* ------------------- Code Input ------------------- */
.code-input-container {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
}

.code-input {
    width: 52px;
    height: 64px;
    text-align: center;
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--color-white);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    outline: none;
}

.code-input:hover {
    border-color: var(--glass-border-strong);
}

.code-input:focus {
    border-color: var(--color-white-subtle);
    background: var(--glass-bg-strong);
    box-shadow: 0 0 0 3px rgba(255,255,255,0.06), 0 0 30px rgba(255,255,255,0.1);
    transform: scale(1.08);
}

/* ------------------- Alert/Notification ------------------- */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    animation: slideInDown 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-success {
    background: rgba(100, 255, 150, 0.08);
    border: 1px solid rgba(100, 255, 150, 0.3);
    color: rgba(100, 255, 150, 0.9);
}

.alert-error {
    background: rgba(255, 100, 100, 0.08);
    border: 1px solid rgba(255, 100, 100, 0.3);
    color: rgba(255, 100, 100, 0.9);
}

.alert-warning {
    background: rgba(255, 200, 100, 0.08);
    border: 1px solid rgba(255, 200, 100, 0.3);
    color: rgba(255, 200, 100, 0.9);
}

.alert-info {
    background: rgba(100, 200, 255, 0.08);
    border: 1px solid rgba(100, 200, 255, 0.3);
    color: rgba(100, 200, 255, 0.9);
}

/* ------------------- Questionnaire Styles ------------------- */
.questionnaire-container {
    max-width: 760px;
    margin: 0 auto;
    padding: var(--space-2xl);
}

.question-card {
    padding: var(--space-3xl);
    margin-bottom: var(--space-xl);
}

.question-number {
    font-size: 0.85rem;
    color: var(--color-white-faint);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-md);
}

.question-text {
    font-size: 1.6rem;
    margin-bottom: var(--space-2xl);
    line-height: 1.4;
    color: var(--color-white-dim);
}

.options-list {
    list-style: none;
}

.option-item {
    padding: var(--space-lg) var(--space-xl);
    margin-bottom: var(--space-sm);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.option-item:hover {
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-strong);
    transform: translateX(12px);
    box-shadow: 0 4px 20px rgba(255,255,255,0.05);
}

.option-item.selected {
    background: var(--color-white);
    border-color: var(--color-white);
    color: var(--color-black);
    box-shadow: 0 4px 30px rgba(255,255,255,0.2);
}

.option-radio {
    width: 22px;
    height: 22px;
    border: 2px solid var(--color-white-subtle);
    border-radius: 50%;
    position: relative;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.option-item.selected .option-radio {
    border-color: var(--color-black);
    background: var(--color-black);
}

.option-item.selected .option-radio::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--color-black);
    border-radius: 50%;
}

/* ------------------- Result Styles ------------------- */
.result-container {
    text-align: center;
    padding: var(--space-3xl);
}

.result-icon {
    font-size: 5rem;
    margin-bottom: var(--space-xl);
    animation: scaleIn 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.result-title {
    margin-bottom: var(--space-lg);
}

.result-score {
    font-size: 4rem;
    font-family: var(--font-heading);
    font-style: italic;
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.result-description {
    font-size: 1.15rem;
    color: var(--color-white-muted);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

/* ------------------- Philosopher Cards ------------------- */
.philosopher-card {
    padding: var(--space-2xl);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-luxury);
    text-align: center;
}

.philosopher-card:hover {
    transform: translateY(-8px);
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-gold);
    box-shadow: var(--shadow-xl), var(--shadow-gold);
}

.philosopher-avatar {
    font-size: 4rem;
    margin-bottom: var(--space-md);
}

.philosopher-name {
    font-family: var(--font-heading);
    font-style: italic;
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.philosopher-quote {
    color: var(--color-white-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ------------------- Utility Classes ------------------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-muted { color: var(--color-white-muted); }
.text-subtle { color: var(--color-white-subtle); }
.text-faint { color: var(--color-white-faint); }
.text-gold { color: var(--color-gold); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.hidden { display: none; }
.visible { display: block; }

.divider {
    height: 1px;
    background: var(--glass-border);
    margin: var(--space-2xl) 0;
}

/* ------------------- Responsive ------------------- */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-lg);
    }

    .hero-orb-1 { width: 350px; height: 350px; }
    .hero-orb-2 { width: 280px; height: 280px; }
    .hero-orb-3 { width: 200px; height: 200px; }
}

@media (max-width: 768px) {
    :root {
        --space-3xl: 4rem;
        --space-4xl: 6rem;
    }

    .container {
        padding: 0 var(--space-md);
    }

    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.5rem; }

    .hero {
        padding: var(--space-3xl) 0;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-full-mobile { width: 100%; }

    .code-input {
        width: 42px;
        height: 54px;
        font-size: 1.3rem;
    }

    .nav-links {
        gap: var(--space-md);
    }

    .questionnaire-container {
        padding: var(--space-lg);
    }

    .question-text {
        font-size: 1.3rem;
    }

    .option-item {
        padding: var(--space-md) var(--space-lg);
    }

    .result-container {
        padding: var(--space-2xl) var(--space-lg);
    }
}

@media (max-width: 480px) {
    .code-input-container {
        gap: 4px;
    }

    .code-input {
        width: 38px;
        height: 48px;
        font-size: 1.1rem;
    }

    .btn {
        padding: var(--space-sm) var(--space-lg);
    }

    .btn-large {
        padding: var(--space-md) var(--space-xl);
    }

    .philosopher-card {
        padding: var(--space-xl);
    }
}

/* ------------------- Games Section ------------------- */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.game-card {
    padding: var(--space-2xl);
    background: var(--glass-bg-luxury);
    backdrop-filter: blur(var(--glass-blur-strong));
    -webkit-backdrop-filter: blur(var(--glass-blur-strong));
    border: 1px solid var(--glass-border-strong);
    border-radius: var(--radius-2xl);
    text-align: center;
    transition: all var(--transition-luxury);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(212,175,55,0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-luxury);
}

.game-card:hover::before {
    opacity: 1;
}

.game-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--glass-border-gold);
    box-shadow: var(--shadow-xl), var(--shadow-gold);
}

.game-card-icon {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
    position: relative;
    z-index: 1;
}

.game-card-title {
    font-family: var(--font-heading);
    font-style: italic;
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    position: relative;
    z-index: 1;
}

.game-card-desc {
    color: var(--color-white-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* ------------------- Difficulty Selector ------------------- */
.difficulty-selector {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-bottom: var(--space-2xl);
}

.difficulty-btn {
    padding: var(--space-md) var(--space-xl);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--color-white-subtle);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.difficulty-btn:hover {
    border-color: var(--glass-border-strong);
    background: var(--glass-bg-strong);
}

.difficulty-btn.active {
    background: var(--gradient-gold);
    border-color: var(--color-gold-dim);
    color: var(--color-gold);
    box-shadow: var(--shadow-gold);
}

.difficulty-btn[data-difficulty="facil"].active {
    background: rgba(100, 255, 150, 0.15);
    border-color: rgba(100, 255, 150, 0.5);
    color: rgba(100, 255, 150, 0.9);
}

.difficulty-btn[data-difficulty="difícil"].active {
    background: rgba(255, 150, 100, 0.15);
    border-color: rgba(255, 150, 100, 0.5);
    color: rgba(255, 150, 100, 0.9);
}

/* ------------------- Quiz Game ------------------- */
.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    padding: var(--space-2xl);
}

.quiz-card {
    padding: var(--space-3xl);
    background: var(--glass-bg-luxury);
    backdrop-filter: blur(var(--glass-blur-strong));
    -webkit-backdrop-filter: blur(var(--glass-blur-strong));
    border: 1px solid var(--glass-border-strong);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

.quiz-question {
    font-size: 1.5rem;
    color: var(--color-white-dim);
    margin-bottom: var(--space-2xl);
    line-height: 1.5;
}

.quiz-options {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.quiz-option {
    padding: var(--space-lg) var(--space-xl);
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 1.05rem;
    color: var(--color-white);
    text-align: left;
}

.quiz-option:hover {
    border-color: var(--glass-border-strong);
    background: var(--glass-bg-strong);
    transform: translateX(8px);
}

.quiz-option.correct {
    background: rgba(100, 255, 150, 0.15);
    border-color: rgba(100, 255, 150, 0.6);
    color: rgba(100, 255, 150, 0.9);
    animation: correctPulse 0.6s ease-out;
}

.quiz-option.incorrect {
    background: rgba(255, 100, 100, 0.15);
    border-color: rgba(255, 100, 100, 0.4);
    color: rgba(255, 100, 100, 0.8);
    animation: incorrectShake 0.5s ease-out;
}

@keyframes correctPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

@keyframes incorrectShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.quiz-feedback {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    font-size: 1.1rem;
    animation: fadeIn 0.4s ease-out;
}

.quiz-feedback.correct {
    background: rgba(100, 255, 150, 0.1);
    border: 1px solid rgba(100, 255, 150, 0.3);
    color: rgba(100, 255, 150, 0.9);
}

.quiz-feedback.incorrect {
    background: rgba(255, 100, 100, 0.1);
    border: 1px solid rgba(255, 100, 100, 0.3);
    color: rgba(255, 100, 100, 0.8);
}

.quiz-score {
    text-align: center;
    padding: var(--space-2xl);
}

.quiz-score-number {
    font-size: 5rem;
    font-family: var(--font-heading);
    font-style: italic;
    color: var(--color-gold);
    margin-bottom: var(--space-md);
}

/* ------------------- Memorama Game ------------------- */
.memorama-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl);
}

.memorama-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
    padding: var(--space-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.memorama-stat {
    text-align: center;
}

.memorama-stat-label {
    font-size: 0.75rem;
    color: var(--color-white-faint);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.memorama-stat-value {
    font-size: 1.8rem;
    font-family: var(--font-heading);
    font-style: italic;
    color: var(--color-gold);
}

.memorama-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.memorama-card {
    aspect-ratio: 1;
    perspective: 1000px;
    cursor: pointer;
}

.memorama-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

.memorama-card.flipped .memorama-card-inner {
    transform: rotateY(180deg);
}

.memorama-card.matched .memorama-card-inner {
    animation: matchedPulse 0.5s ease-out;
}

@keyframes matchedPulse {
    0%, 100% { transform: rotateY(180deg) scale(1); }
    50% { transform: rotateY(180deg) scale(1.1); }
}

.memorama-card-front,
.memorama-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    border: 1px solid var(--glass-border);
}

.memorama-card-front {
    background: var(--gradient-gold);
    border-color: var(--glass-border-gold);
}

.memorama-card-front::after {
    content: '🏛️';
    font-size: 1.5rem;
    opacity: 0.5;
}

.memorama-card-back {
    background: var(--glass-bg-luxury);
    transform: rotateY(180deg);
    border-color: var(--glass-border-gold);
    font-size: 1.8rem;
    padding: var(--space-sm);
    text-align: center;
    word-break: break-word;
}

.memorama-card-back.phrase {
    font-size: 0.75rem;
    font-style: italic;
}

.memorama-modes {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-bottom: var(--space-xl);
}

.memorama-mode-btn {
    padding: var(--space-md) var(--space-xl);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--color-white-subtle);
    cursor: pointer;
    transition: all var(--transition-base);
}

.memorama-mode-btn:hover {
    border-color: var(--glass-border-strong);
    background: var(--glass-bg-strong);
}

.memorama-mode-btn.active {
    background: var(--gradient-gold);
    border-color: var(--color-gold-dim);
    color: var(--color-gold);
    box-shadow: var(--shadow-gold);
}

.memorama-win {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.memorama-win.show {
    opacity: 1;
    pointer-events: auto;
}

.memorama-win-content {
    text-align: center;
    padding: var(--space-3xl);
    background: var(--glass-bg-luxury);
    border: 1px solid var(--glass-border-gold);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl), var(--shadow-gold);
    animation: scaleIn 0.5s ease-out;
}

.memorama-win-title {
    font-size: 2.5rem;
    margin-bottom: var(--space-lg);
    color: var(--color-gold);
}

.memorama-win-stats {
    display: flex;
    gap: var(--space-2xl);
    justify-content: center;
    margin-bottom: var(--space-2xl);
}

.memorama-win-stat {
    text-align: center;
}

.memorama-win-stat-value {
    font-size: 2.5rem;
    font-family: var(--font-heading);
    font-style: italic;
    color: var(--color-white);
}

.memorama-win-stat-label {
    font-size: 0.85rem;
    color: var(--color-white-subtle);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ------------------- Real-time Philosopher Indicator ------------------- */
.philosopher-tracker {
    padding: var(--space-xl);
    background: var(--glass-bg-luxury);
    backdrop-filter: blur(var(--glass-blur-strong));
    -webkit-backdrop-filter: blur(var(--glass-blur-strong));
    border: 1px solid var(--glass-border-gold);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-2xl);
    text-align: center;
}

.philosopher-tracker-label {
    font-size: 0.85rem;
    color: var(--color-white-faint);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-md);
}

.philosopher-tracker-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
}

.philosopher-tracker-emoji {
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

.philosopher-tracker-name {
    font-family: var(--font-heading);
    font-style: italic;
    font-size: 1.5rem;
    color: var(--color-gold);
}

/* ------------------- Questionnaire Updated Styles ------------------- */
.questionnaire-container {
    max-width: 760px;
    margin: 0 auto;
    padding: var(--space-2xl);
}

.question-card {
    padding: var(--space-3xl);
    margin-bottom: var(--space-xl);
}

.question-number {
    font-size: 0.85rem;
    color: var(--color-white-faint);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-md);
}

.question-text {
    font-size: 1.6rem;
    margin-bottom: var(--space-2xl);
    line-height: 1.4;
    color: var(--color-white-dim);
}

.options-list {
    list-style: none;
}

.option-item {
    padding: var(--space-lg) var(--space-xl);
    margin-bottom: var(--space-sm);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.option-item:hover {
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-strong);
    transform: translateX(12px);
    box-shadow: 0 4px 20px rgba(255,255,255,0.05);
}

.option-item.selected {
    background: var(--color-white);
    border-color: var(--color-white);
    color: var(--color-black);
    box-shadow: 0 4px 30px rgba(255,255,255,0.2);
}

.option-radio {
    width: 22px;
    height: 22px;
    border: 2px solid var(--color-white-subtle);
    border-radius: 50%;
    position: relative;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.option-item.selected .option-radio {
    border-color: var(--color-black);
    background: var(--color-black);
}

.option-item.selected .option-radio::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--color-black);
    border-radius: 50%;
}

/* ------------------- Accessibility ------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}

:focus-visible {
    outline: 2px solid var(--color-white-subtle);
    outline-offset: 2px;
}

::selection {
    background: var(--color-white);
    color: var(--color-black);
}

::-moz-selection {
    background: var(--color-white);
    color: var(--color-black);
}

/* ------------------- Responsive for Games ------------------- */
@media (max-width: 768px) {
    .memorama-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-sm);
    }

    .memorama-card-back.phrase {
        font-size: 0.55rem;
        padding: var(--space-xs);
    }

    .memorama-header {
        flex-direction: column;
        gap: var(--space-md);
    }

    .games-grid {
        grid-template-columns: 1fr;
    }

    .difficulty-selector {
        flex-direction: column;
        align-items: stretch;
    }

    .difficulty-btn {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .memorama-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .memorama-card-back.phrase {
        font-size: 0.45rem;
    }

    .quiz-question {
        font-size: 1.2rem;
    }

    .quiz-option {
        padding: var(--space-md);
        font-size: 0.9rem;
    }
}