@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    /* LEGO Brand Colors */
    --lego-red: #E3000B;
    --lego-yellow: #FFD700;
    --lego-blue: #0055BF;
    --lego-green: #237841;
    --lego-orange: #FF6D00;

    /* Dark Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.08);

    /* Text */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 100%);
    --gradient-glow: radial-gradient(circle at center, rgba(255, 215, 0, 0.15) 0%, transparent 70%);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(255, 215, 0, 0.2);

    /* 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;

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

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

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

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

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

/* Background Ambient Effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(227, 0, 11, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 85, 191, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 215, 0, 0.05) 0%, transparent 60%);
    pointer-events: none;
    z-index: -1;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Container */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--lego-yellow) 0%, var(--lego-orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Auth Button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: linear-gradient(135deg, var(--lego-yellow) 0%, var(--lego-orange) 100%);
    color: #000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--glass-bg);
    border-color: var(--lego-yellow);
}

.btn-google {
    background: #fff;
    color: #333;
    font-weight: 500;
}

.btn-google:hover {
    background: #f5f5f5;
}

.btn-google svg {
    width: 18px;
    height: 18px;
}

/* Hero Section */
.hero {
    min-height: 30vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: calc(80px + var(--spacing-2xl)) var(--spacing-xl) var(--spacing-2xl);
    position: relative;
}

.hero-title {
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease-out;
}

.hero-title span {
    display: block;
    background: linear-gradient(135deg, var(--lego-yellow) 0%, var(--lego-red) 50%, var(--lego-orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* Series Grid - Uniform Height */
.series-section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.875rem;
}

.series-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-md);
}

.series-card {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    cursor: pointer;
    transition: all var(--transition-normal);
    height: 200px;
    /* Fixed height for all cards */
}

.series-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-card);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 1;
}

.series-card:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: rgba(255, 215, 0, 0.3);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

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

.series-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.series-card:hover .series-card-image {
    transform: scale(1.1);
}

.series-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-md);
    z-index: 2;
}

.series-card-number {
    font-size: 0.65rem;
    color: var(--lego-yellow);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 2px;
}

.series-card-title {
    font-size: 0.8rem;
    font-weight: 700;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Footer */
.footer {
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--glass-border);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(var(--rotate, 0deg));
    }

    50% {
        transform: translateY(-15px) rotate(var(--rotate, 0deg));
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.08;
    }

    50% {
        opacity: 0.15;
    }
}

/* Responsive - Homepage */
@media (max-width: 1400px) {
    .series-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 1000px) {
    .series-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .series-card {
        height: 180px;
    }
}

@media (max-width: 768px) {
    .series-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .series-card {
        height: 160px;
    }

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

    .hero {
        min-height: 20vh;
        padding-top: 80px;
    }

    .logo-text {
        display: none;
    }
}

@media (max-width: 480px) {
    .series-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .series-card {
        height: 140px;
    }

    .series-card-title {
        font-size: 0.7rem;
    }
}

/* Loading State */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    grid-column: 1 / -1;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--glass-border);
    border-top-color: var(--lego-yellow);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Series Detail Page Styles */
.series-detail {
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.question-marks-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.question-mark {
    position: absolute;
    font-weight: 900;
    opacity: 0.12;
    animation: float 8s ease-in-out infinite;
    user-select: none;
}

.series-header {
    position: relative;
    z-index: 10;
    padding: calc(80px + var(--spacing-md)) var(--spacing-md) var(--spacing-md);
    text-align: center;
}

.series-title {
    margin-bottom: var(--spacing-sm);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--lego-yellow);
}

/* Minifigures Grid - Responsive to screen height */
.minifigures-container {
    position: relative;
    z-index: 10;
    padding: 0 var(--spacing-sm) var(--spacing-md);
}

.minifigures-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    position: relative;
    z-index: 10;
}

.minifigure-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    text-align: center;
    transition: all var(--transition-normal);
}

.minifigure-card:hover {
    transform: translateY(-4px);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-sm);
}

.minifigure-image {
    width: 100%;
    height: auto;
    max-height: calc((100vh - 200px) / 4 - 60px);
    object-fit: contain;
    margin: 0 auto var(--spacing-xs);
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
    transition: transform var(--transition-normal);
}

.minifigure-card:hover .minifigure-image {
    transform: scale(1.05);
}

.minifigure-number {
    font-size: 0.65rem;
    color: var(--lego-yellow);
    font-weight: 600;
    margin-bottom: 2px;
}

.minifigure-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Responsive for minifigures - Fit all to screen */
@media (max-width: 1200px) {
    .minifigures-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 900px) {
    .minifigures-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .minifigure-image {
        max-height: calc((100vh - 180px) / 4 - 50px);
    }
}

@media (max-width: 600px) {
    .minifigures-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 4px;
    }

    .minifigure-card {
        padding: 4px;
        border-radius: 6px;
    }

    .minifigure-image {
        max-height: calc((100vh - 160px) / 4 - 40px);
    }

    .minifigure-title {
        font-size: 0.6rem;
    }

    .minifigure-number {
        font-size: 0.55rem;
    }

    .series-header {
        padding: calc(70px + var(--spacing-sm)) var(--spacing-sm) var(--spacing-sm);
    }
}

/* Lazy Loading */
.lazy-image {
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.lazy-image.loaded {
    opacity: 1;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 420px;
    width: 90%;
    transform: translateY(20px) scale(0.95);
    transition: all var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

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

.modal-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.modal-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--lego-yellow);
}

.form-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.form-divider::before,
.form-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--glass-border);
}

.btn-full {
    width: 100%;
}

.modal-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.modal-footer a {
    color: var(--lego-yellow);
}

.modal-footer a:hover {
    text-decoration: underline;
}