/* ==========================================================================
   ZYLFORGE OS — MODERN GLASSMORPHISM DESIGN SYSTEM & RESPONSIVE STYLES
   ========================================================================== */

:root {
    --bg-dark: #0B0F19;
    --bg-card: #121824;
    --bg-card-hover: #1A2234;
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --text-dark: #64748B;
    --accent-cyan: #06B6D4;
    --accent-emerald: #10B981;
    --accent-blue: #3B82F6;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(6, 182, 212, 0.3);
    --nav-height: 72px;
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation Bar */
.navbar {
    height: var(--nav-height);
    background: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 800;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -0.5px;
    z-index: 1001;
}

.logo-badge {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-emerald));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    color: #000;
    font-size: 20px;
    box-shadow: 0 0 16px rgba(6, 182, 212, 0.4);
}

.logo-img {
    height: 40px;
    width: auto;
    border-radius: 8px;
    object-fit: contain;
    box-shadow: 0 0 16px rgba(6, 182, 212, 0.4);
    border: 1px solid var(--border-glow);
    transition: transform 0.2s ease;
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 24px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent-cyan);
}

.nav-buttons {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Mobile Hamburger Menu */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--text-main);
    transition: all 0.3s ease;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-emerald));
    color: #000;
    font-weight: 700;
    box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-cyan);
}

/* Hero Section */
.hero {
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
}

.hero-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid var(--border-glow);
    border-radius: 20px;
    color: var(--accent-cyan);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 54px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -1.5px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-emerald));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 760px;
    margin: 0 auto 36px;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* Section Common */
.section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 12px;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 16px;
    max-width: 640px;
    margin: 0 auto;
}

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    transition: all 0.3s ease;
}

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

.feature-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.feature-desc {
    color: var(--text-muted);
    font-size: 14px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-main);
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease;
}

.form-control:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.2);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal-box {
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 440px;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
}

/* Floating AI Assistant Widget */
.ai-widget-button {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    border-radius: 30px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-emerald));
    color: #000;
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
    z-index: 3000;
    border: none;
    transition: transform 0.2s ease;
}

.ai-widget-button:hover {
    transform: scale(1.1);
}

.ai-widget-box {
    position: fixed;
    bottom: 96px;
    right: 24px;
    width: 360px;
    height: 480px;
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: 16px;
    display: none;
    flex-direction: column;
    z-index: 3000;
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.6);
    overflow: hidden;
}

.ai-widget-header {
    background: rgba(6, 182, 212, 0.15);
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.ai-widget-messages {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 13px;
}

.ai-msg {
    padding: 10px 14px;
    border-radius: 12px;
    max-width: 85%;
    line-height: 1.4;
}

.ai-msg-bot {
    background: rgba(255, 255, 255, 0.08);
    align-self: flex-start;
}

.ai-msg-user {
    background: var(--accent-cyan);
    color: #000;
    font-weight: 600;
    align-self: flex-end;
}

.ai-widget-input {
    display: flex;
    padding: 12px;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.3);
}

.ai-widget-input input {
    flex: 1;
    background: transparent;
    border: none;
    color: #fff;
    outline: none;
    font-size: 13px;
}

.ai-widget-input button {
    background: var(--accent-cyan);
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    color: #000;
    font-weight: 700;
    cursor: pointer;
}

/* Footer */
footer {
    padding: 60px 0 30px;
    background: #080C14;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 15px;
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-dark);
}

/* RESPONSIVE OVERHAUL (MOBILE REPAIR) */
@media (max-width: 992px) {
    .hero-title {
        font-size: 38px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--nav-height));
        background: rgba(11, 15, 25, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        padding: 40px 24px;
        gap: 20px;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
        z-index: 999;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-links a {
        font-size: 18px;
        width: 100%;
        text-align: center;
    }

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

    .nav-buttons .btn {
        width: 100%;
    }

    .hero {
        padding: 40px 0;
    }

    .hero-title {
        font-size: 30px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .ai-widget-box {
        width: calc(100vw - 32px);
        right: 16px;
        bottom: 80px;
    }
}