:root {
    --bg-color: #0a0a0a;
    --surface-color: #141414;
    --surface-light: #1a1a1a;
    --accent-color: #00b4d8;
    --accent-hover: #0096c7;
    --accent-light: rgba(0, 180, 216, 0.1);
    --text-color: #ffffff;
    --text-secondary: #b8b8b8;
    --text-muted: #707070;
    --border-color: #2a2a2a;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --card-hover-shadow: 0 8px 30px rgba(0, 180, 216, 0.15);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --max-width: 1280px;
    --easing: cubic-bezier(0.4, 0, 0.2, 1);
    --gradient-accent: linear-gradient(135deg, #00b4d8 0%, #0077b6 100%);
    --gradient-dark: linear-gradient(135deg, #141414 0%, #1a1a1a 100%);
    --telegram-color: #229ED9;
    --warning-color: #ef4444;
    --success-color: #22c55e;
    --info-color: #fbbf24;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    background: var(--bg-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

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

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s var(--easing);
}

a:hover {
    color: var(--accent-hover);
}

header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: var(--text-color);
    font-size: 1.1rem;
}

.logo i {
    color: var(--accent-color);
    font-size: 1.3rem;
}

.nav-links {
    display: flex;
    gap: 8px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    transition: all 0.2s var(--easing);
    font-size: 0.95rem;
}

.nav-links a:hover {
    color: var(--text-color);
    background: var(--surface-color);
}

.hero {
    display: flex;
    align-items: center;
    gap: 48px;
    padding: 80px 0;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    line-height: 1.1;
    margin-bottom: 16px;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

.btn {
    background: var(--gradient-accent);
    color: white;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    display: inline-block;
    transition: all 0.2s var(--easing);
    font-size: 0.95rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(0, 180, 216, 0.25);
    color: white;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    border-radius: var(--border-radius);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    max-width: 100%;
}

.section-title {
    text-align: center;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin: 60px 0 32px;
    font-weight: 700;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--gradient-accent);
    margin: 16px auto;
    border-radius: 2px;
}

.spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.spec-item {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 24px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s var(--easing);
}

.spec-item:hover {
    transform: translateY(-4px);
    border-color: var(--accent-color);
    box-shadow: var(--card-hover-shadow);
}

.spec-item i {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 12px;
}

.spec-item h3 {
    margin-bottom: 8px;
    font-size: 1rem;
    font-weight: 600;
}

.spec-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.search-container {
    margin-bottom: 24px;
}

.search-bar {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    background: var(--surface-color);
    border-radius: 50px;
    padding: 8px 16px;
    border: 2px solid var(--border-color);
    transition: all 0.2s var(--easing);
}

.search-bar:focus-within {
    border-color: var(--accent-color);
    background: var(--surface-light);
}

.search-bar i {
    margin-right: 12px;
    color: var(--text-muted);
}

.search-bar input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 0.95rem;
    padding: 8px 0;
    outline: none;
    color: var(--text-color);
}

.search-bar input::placeholder {
    color: var(--text-muted);
}

.clear-search {
    background: none;
    border: none;
    cursor: pointer;
    display: none;
    color: var(--text-muted);
    padding: 4px;
    transition: color 0.2s var(--easing);
}

.clear-search:hover {
    color: var(--accent-color);
}

.clear-search.show {
    display: block;
}

.search-results-count {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: -8px 0 16px;
    min-height: 20px;
}

.filter-controls {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 20px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s var(--easing);
}

.filter-btn:hover {
    background: var(--surface-light);
    color: var(--text-color);
}

.filter-btn.active {
    background: var(--gradient-accent);
    color: white;
    border-color: transparent;
}

.roms-container,
.kernels-container,
.recoveries-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.loading,
.error {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-muted);
    padding: 40px;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    border: 1px dashed var(--border-color);
}

.loading i {
    animation: spin 1s linear infinite;
    display: block;
    margin-bottom: 12px;
    font-size: 1.5rem;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.rom-card,
.kr-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    display: none;
    transition: all 0.3s var(--easing);
}

.rom-card.visible,
.kr-card.visible {
    display: flex;
    flex-direction: column;
    animation: fadeInUp 0.5s var(--easing);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.rom-card:hover,
.kr-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-hover-shadow);
    border-color: var(--accent-color);
}

.rom-image,
.kr-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--surface-light);
}

.rom-image img,
.kr-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s var(--easing);
}

.rom-card:hover .rom-image img,
.kr-card:hover .kr-image img {
    transform: scale(1.05);
}

.rom-tags {
    position: absolute;
    top: 12px;
    left: 12px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.rom-tag {
    padding: 4px 10px;
    border-radius: 50px;
    font-weight: 600;
    color: white;
    font-size: 0.75rem;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.status-official {
    background: rgba(34, 197, 94, 0.9);
}

.status-unofficial {
    background: rgba(239, 68, 68, 0.9);
}

.build-type-gapps {
    background: rgba(59, 130, 246, 0.9);
}

.build-type-vanilla {
    background: rgba(107, 114, 128, 0.9);
}

.rom-content,
.kr-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.rom-name,
.kr-name {
    font-size: 1.2rem;
    font-weight: 600;
}

.rom-details,
.kr-details {
    color: var(--text-muted);
    font-size: 0.9rem;
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.rom-details i,
.kr-details i {
    color: var(--accent-color);
}

.rom-buttons,
.kr-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 10px;
    margin-top: auto;
}

.rom-btn {
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
    text-align: center;
    font-weight: 500;
    font-size: 0.85rem;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.2s var(--easing);
}

.rom-btn:hover {
    background: var(--surface-color);
    color: var(--text-color);
    transform: translateY(-1px);
}

.rom-btn.download {
    background: var(--gradient-accent);
    color: white;
    border: none;
}

.rom-btn.download:hover {
    box-shadow: 0 4px 12px rgba(0, 180, 216, 0.3);
}

.donate-section {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 60px 20px;
    margin: 60px 0;
    text-align: center;
}

.donate-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 12px;
}

.donate-subtitle {
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.donate-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    max-width: 700px;
    margin: 0 auto;
}

.donate-method {
    background: var(--surface-light);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: all 0.3s var(--easing);
}

.donate-method:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-hover-shadow);
}

.donate-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.3rem;
    color: white;
}

.donate-icon.upi {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.donate-icon.coffee {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.donate-icon.paypal {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.donate-method h3 {
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.donate-method p {
    color: var(--text-muted);
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.donate-btn {
    background: var(--gradient-accent);
    color: white;
    border: none;
    padding: 8px 24px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s var(--easing);
    font-size: 0.9rem;
}

.donate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 180, 216, 0.3);
}

.community-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.community-card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 32px;
    text-align: center;
    transition: all 0.3s var(--easing);
}

.community-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-hover-shadow);
}

.community-card i {
    font-size: 2.5rem;
    color: var(--telegram-color);
    margin-bottom: 16px;
}

.community-card h3 {
    margin-bottom: 16px;
    font-size: 1.1rem;
}

.community-card a {
    display: inline-block;
    padding: 8px 24px;
    background: var(--surface-light);
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.2s var(--easing);
    font-size: 0.9rem;
}

.community-card a:hover {
    background: var(--telegram-color);
    color: white;
    transform: translateY(-2px);
}

footer {
    background: var(--surface-color);
    color: var(--text-muted);
    padding: 40px 0 20px;
    margin-top: 60px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    margin-bottom: 32px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.credits {
    margin-top: 8px;
}

.credits a {
    color: var(--accent-color);
    font-weight: 500;
}

.footer-section.warning {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 32px;
}

.footer-section.warning h3 {
    color: var(--warning-color);
    margin-bottom: 12px;
}

.footer-section.warning i {
    margin-right: 8px;
}

.footer-section.warning p {
    color: var(--text-secondary);
}

.instructions-container {
    margin-top: 32px;
}

.nav-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.nav-button {
    background: var(--gradient-accent);
    color: white;
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.2s var(--easing);
    font-size: 0.9rem;
}

.nav-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 180, 216, 0.25);
    color: white;
}

.nav-button i {
    margin-right: 8px;
}

.guide-section {
    margin: 48px 0;
}

.guide-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-color);
}

.guide-header i {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.guide-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

.prerequisites {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.prereq-item {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.prereq-item i {
    font-size: 1.8rem;
    color: var(--accent-color);
    margin-bottom: 12px;
}

.prereq-item h4 {
    margin-bottom: 8px;
    font-size: 1rem;
}

.prereq-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.step-list {
    list-style: none;
    padding: 0;
    counter-reset: step-counter;
}

.step-list li {
    counter-increment: step-counter;
    margin-bottom: 24px;
    position: relative;
    padding-left: 56px;
}

.step-list li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: white;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-content h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.7;
}

.code-block {
    background: #0d0d0d;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 16px;
    margin: 12px 0;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9rem;
    color: #64b5f6;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.highlight {
    color: var(--accent-color);
    font-weight: 600;
}

.note {
    background: rgba(251, 191, 36, 0.1);
    border-left: 3px solid var(--info-color);
    padding: 16px;
    margin: 16px 0;
    border-radius: var(--border-radius-sm);
}

.note p {
    color: var(--text-secondary);
    margin: 0;
}

.error-section {
    background: rgba(239, 68, 68, 0.05);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 20px;
}

.error-section h4 {
    color: var(--warning-color);
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.error-section i {
    margin-right: 8px;
}

.error-section p {
    color: var(--text-secondary);
}

.error-section img {
    margin-top: 12px;
    border-radius: var(--border-radius-sm);
    max-width: 100%;
}

.rom-card.hidden,
.kr-card.hidden,
.rom-card.search-hidden,
.kr-card.search-hidden {
    display: none !important;
}

.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    nav {
        padding: 12px 0;
    }

    .nav-links {
        gap: 4px;
    }

    .nav-links a {
        padding: 6px 10px;
        font-size: 0.85rem;
    }

    .hero {
        flex-direction: column;
        text-align: center;
        padding: 40px 0;
        gap: 32px;
    }

    .hero-content {
        max-width: 100%;
    }

    .spec-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .roms-container,
    .kernels-container,
    .recoveries-container {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .donate-methods {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .community-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .prerequisites {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .step-list li {
        padding-left: 48px;
    }

    .step-list li::before {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }

    .guide-header {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }

    .guide-header h3 {
        font-size: 1.3rem;
    }

    footer {
        padding: 32px 0 16px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1rem;
    }

    .logo i {
        font-size: 1.1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 0.95rem;
    }

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

    .spec-item {
        padding: 20px;
    }

    .rom-buttons,
    .kr-buttons {
        grid-template-columns: 1fr 1fr;
    }

    .nav-buttons {
        flex-direction: column;
        width: 100%;
    }

    .nav-button {
        width: 100%;
        text-align: center;
    }

    .search-bar input::placeholder {
        font-size: 0.85rem;
    }
}

@media (min-width: 1440px) {

    .roms-container,
    .kernels-container,
    .recoveries-container {
        grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    }
}

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