/* ==========================================================================
   Phphone.org - Design System & Modern Aesthetics
   ========================================================================== */

:root {
    --bg-main: #0B0F19;
    --bg-card: rgba(18, 24, 38, 0.7);
    --bg-card-hover: rgba(26, 34, 53, 0.9);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(99, 102, 241, 0.3);
    
    --primary: #6366F1;
    --primary-hover: #4F46E5;
    --secondary: #EC4899;
    --accent-cyan: #06B6D4;
    --accent-purple: #A855F7;
    --accent-emerald: #10B981;
    
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-code: 'Fira Code', monospace;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-glow: 0 0 50px rgba(99, 102, 241, 0.15);
}

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

html {
    scroll-behavior: smooth;
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-primary);
}

body {
    overflow-x: hidden;
    line-height: 1.6;
}

/* Background Gradients */
.glow-bg {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(140px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
}

.glow-top-left {
    top: -100px;
    left: -100px;
    background: radial-gradient(circle, var(--primary), transparent 70%);
}

.glow-top-right {
    top: 100px;
    right: -100px;
    background: radial-gradient(circle, var(--secondary), transparent 70%);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Header & Nav */
header {
    position: sticky;
    top: 16px;
    z-index: 100;
    margin: 16px auto 0;
    max-width: 1200px;
    width: calc(100% - 32px);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(11, 15, 25, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 9999px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), 0 0 25px rgba(99, 102, 241, 0.15);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    padding: 0 16px 0 20px;
    max-width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text-primary);
    flex-shrink: 0;
}

.logo-badge {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    font-size: 0.68rem;
    padding: 2px 7px;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2px;
    list-style: none;
    background: transparent;
    padding: 0;
    border: none;
    margin: 0;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.85rem;
    padding: 6px 12px;
    border-radius: 9999px;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.nav-links a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
}

.nav-cta-desktop {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-cta-desktop .btn {
    padding: 8px 16px;
    font-size: 0.82rem;
    border-radius: 9999px;
}

.lang-switch-box {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2px 4px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 9999px;
    transition: var(--transition);
    font-size: 0.72rem;
    font-family: var(--font-body);
}

.lang-btn:hover {
    color: var(--text-primary);
}

.lang-btn.active {
    color: #fff;
    background: var(--primary);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
}

.lang-divider {
    color: var(--text-muted);
    opacity: 0.3;
    font-size: 0.7rem;
}

.nav-cta-mobile {
    display: none;
}

.hamburger-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
    z-index: 110;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
}

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

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-highlight);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding: 70px 0 80px;
    text-align: center;
}

.hero-logo-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin-bottom: 24px;
}

.hero-logo {
    width: 150px;
    height: 150px;
    object-fit: contain;
    filter: drop-shadow(0 0 40px rgba(99, 102, 241, 0.5)) drop-shadow(0 0 15px rgba(236, 72, 153, 0.3));
    animation: heroFloat 4s ease-in-out infinite;
    transition: var(--transition);
}

.hero-logo:hover {
    transform: scale(1.08) rotate(2deg);
    filter: drop-shadow(0 0 55px rgba(99, 102, 241, 0.7));
}

@keyframes heroFloat {
    0%, 100% {
        transform: translateY(0px) scale(1);
    }
    50% {
        transform: translateY(-10px) scale(1.03);
    }
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--border-highlight);
    border-radius: var(--radius-full);
    color: #A5B4FC;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.gradient-text {
    background: linear-gradient(135deg, #fff 0%, #A5B4FC 50%, var(--secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 720px;
    margin: 0 auto 40px;
}

/* Terminal & Install Snippet */
.install-box {
    max-width: 680px;
    margin: 0 auto 50px;
    background: #0D1117;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px;
    background: #161B22;
    border-bottom: 1px solid var(--border-color);
}

.dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.dot-red { background: #FF5F56; }
.dot-yellow { background: #FFBD2E; }
.dot-green { background: #27C93F; }

.os-tabs {
    display: flex;
    gap: 6px;
    margin-left: 8px;
}

.os-tab {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.78rem;
    font-family: var(--font-body);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
}

.os-tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.os-tab.active {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.4);
    color: #A5B4FC;
    font-weight: 600;
}

.terminal-title {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-code);
    white-space: nowrap;
}

.terminal-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    font-family: var(--font-code);
    font-size: 0.95rem;
    color: #E6EDE3;
}

.command-text {
    display: flex;
    align-items: center;
    gap: 10px;
    overflow-x: auto;
}

.prompt {
    color: var(--secondary);
    user-select: none;
}

.copy-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition);
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

/* Sections */
.section {
    padding: 90px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-title p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    backdrop-filter: blur(12px);
    transition: var(--transition);
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-highlight);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.1);
    color: #818CF8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Template Marketplace Grid */
.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.template-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.template-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-highlight);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.template-preview {
    height: 180px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(236, 72, 153, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.template-badge {
    position: absolute;
    top: 14px;
    right: 14px;
    background: rgba(236, 72, 153, 0.2);
    border: 1px solid var(--secondary);
    color: #F472B6;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.template-info {
    padding: 24px;
}

.template-info h4 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.template-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.template-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
}

/* Commands Table / Docs Preview */
.cmd-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.cmd-table th, .cmd-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.cmd-table th {
    background: rgba(255, 255, 255, 0.03);
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-primary);
}

.cmd-table code {
    font-family: var(--font-code);
    color: #818CF8;
    background: rgba(99, 102, 241, 0.1);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

/* FAQ Accordion */
.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    cursor: pointer;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--border-highlight);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
}

.faq-answer {
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
    background: rgba(11, 15, 25, 0.95);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h5 {
    font-family: var(--font-heading);
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* ==========================================================================
   Responsive Media Queries & Mobile Hamburger Drawer
   ========================================================================== */

@media (max-width: 1080px) {
    .nav-cta-desktop {
        display: none;
    }

    .hamburger-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-menu {
        position: fixed;
        top: 76px;
        left: 0;
        width: 100%;
        height: calc(100vh - 76px);
        background: rgba(11, 15, 25, 0.98);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding: 40px 24px;
        gap: 32px;
        transform: translateY(-150%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 105;
        border-bottom: 1px solid var(--border-color);
        overflow-y: auto;
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 20px;
        width: 100%;
        background: transparent;
        border: none;
        padding: 0;
    }

    .nav-links a {
        font-size: 1.15rem;
        font-weight: 600;
    }

    .nav-cta-mobile {
        display: flex;
        flex-direction: column;
        gap: 14px;
        width: 100%;
        max-width: 320px;
        margin-top: 10px;
    }

    .nav-cta-mobile .btn {
        justify-content: center;
        width: 100%;
        padding: 14px 24px;
        font-size: 1rem;
    }

    .hero h1 {
        font-size: 2.7rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .cmd-table th, .cmd-table td {
        padding: 12px 14px;
        font-size: 0.85rem;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 60px 0 40px;
    }

    .hero h1 {
        font-size: 2.1rem;
    }

    .command-text {
        font-size: 0.8rem;
    }

    .features-grid, .templates-grid {
        grid-template-columns: 1fr;
    }

    .install-box {
        margin-bottom: 30px;
    }
}