/* ============================================================
   SHARED.CSS — AI Powered Dahlia Design System
   Reusable styles shared across all pages of aipowereddahlia.com
   ============================================================ */

/* RESET & BASE */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { overflow-x: hidden; }
body {
    font-family: 'Satoshi', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }

/* COLOR SYSTEM */
:root {
    --bg-primary: #0A0A0A;
    --bg-elevated: #111111;
    --bg-surface: #161616;
    --text-primary: #F5F5F5;
    --text-secondary: rgba(245, 245, 245, 0.6);
    --text-muted: rgba(245, 245, 245, 0.4);
    --accent: #8c52ff;
    --accent-glow: rgba(140, 82, 255, 0.15);
    --cyan: #5ce1e6;
    --cyan-glow: rgba(92, 225, 230, 0.15);
    --lavender: #e9dfff;
    --mauve: #c197d2;
    --pink: #fbc5ff;
    --blue: #669bf3;
    --periwinkle: #a1a9fe;
    --gradient-brand: linear-gradient(135deg, #5ce1e6, #8c52ff);
    --gradient-feminine: linear-gradient(135deg, #5ce1e6, #8c52ff, #fbc5ff);
    --border-default: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
}

/* TYPOGRAPHY */
h1, h2, h3, h4 {
    font-family: 'Clash Display', 'Satoshi', sans-serif;
    font-weight: 600;
    line-height: 1.1;
}
h1 { font-size: clamp(2.4rem, 5.5vw, 4.5rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 3rem); letter-spacing: -0.02em; }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.5rem); letter-spacing: -0.01em; }

/* LAYOUT */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { padding: 140px 0; position: relative; }

/* SECTION LABELS */
.section-label {
    font-size: 0.8rem; font-weight: 500; text-transform: uppercase;
    letter-spacing: 0.15em;
    background: var(--gradient-brand);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; margin-bottom: 16px;
}
.section-heading { margin-bottom: 20px; }
.section-subtext {
    color: var(--text-secondary); font-size: 1.05rem;
    max-width: 560px; line-height: 1.7;
}

/* BUTTONS */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 28px; border-radius: 8px;
    font-family: 'Satoshi', sans-serif; font-size: 0.95rem;
    font-weight: 600; cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none; white-space: nowrap;
}
.btn-arrow { transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); display: inline-block; }
.btn:hover .btn-arrow { transform: translateX(4px); }
.btn:active { transform: scale(0.98); }
.btn-primary {
    position: relative; background: var(--bg-surface);
    color: var(--text-primary); font-weight: 600;
    border: 1px solid transparent;
    background-image: linear-gradient(var(--bg-surface), var(--bg-surface)), var(--gradient-brand);
    background-origin: border-box; background-clip: padding-box, border-box;
}
.btn-primary::before {
    content: ''; position: absolute; inset: 0; border-radius: inherit;
    background: var(--gradient-brand); opacity: 0;
    transition: opacity 0.35s ease; z-index: 0;
}
.btn-primary:hover::before { opacity: 0.12; }
.btn-primary:hover {
    box-shadow: 0 0 24px rgba(92, 225, 230, 0.15), 0 0 48px rgba(140, 82, 255, 0.1);
    transform: translateY(-1px);
}
.btn-primary span, .btn-primary .btn-arrow { position: relative; z-index: 1; }
.btn-ghost {
    background: transparent; color: var(--text-secondary);
    border: 1px solid var(--border-default);
}
.btn-ghost:hover {
    border-color: rgba(140, 82, 255, 0.3); color: var(--text-primary);
    background: rgba(140, 82, 255, 0.04);
}
.btn-outline {
    background: transparent; color: var(--text-primary);
    border: 1px solid var(--border-default); font-weight: 500;
}
.btn-outline:hover {
    border-color: var(--border-hover); background: rgba(255, 255, 255, 0.03);
}

/* NAVIGATION */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    padding: 16px 0; transition: all 0.3s ease;
}
.nav.scrolled {
    background: rgba(10, 10, 10, 0.88);
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(140, 82, 255, 0.1);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo img { height: 32px; width: auto; }
.nav-logo-text {
    font-family: 'Clash Display', sans-serif; font-weight: 600;
    font-size: 1rem; color: var(--text-primary);
    letter-spacing: -0.01em; white-space: nowrap;
}
.nav-links { display: flex; align-items: center; gap: 36px; list-style: none; }
.nav-links a {
    font-size: 0.9rem; font-weight: 500; color: var(--text-secondary);
    transition: color 0.2s; position: relative;
}
.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0; height: 1px; background: var(--gradient-brand);
    transition: width 0.3s ease;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
    padding: 10px 22px; font-size: 0.85rem;
    background: var(--bg-surface) !important; color: var(--text-primary) !important;
    font-weight: 600 !important; border: 1px solid transparent !important;
    background-image: linear-gradient(var(--bg-surface), var(--bg-surface)), var(--gradient-brand) !important;
    background-origin: border-box !important; background-clip: padding-box, border-box !important;
}
.nav-cta:hover {
    box-shadow: 0 0 20px rgba(92, 225, 230, 0.15), 0 0 40px rgba(140, 82, 255, 0.1) !important;
    transform: translateY(-1px);
}
.nav-cta::after { display: none; }
/* Nav dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown > a { cursor: default; }
.nav-dropdown-menu {
    display: none; position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
    background: rgba(17, 17, 17, 0.96); backdrop-filter: blur(24px);
    border: 1px solid var(--border-default); border-radius: 12px;
    padding: 12px 0; min-width: 220px; padding-top: 12px; z-index: 101;
}
.nav-dropdown:hover .nav-dropdown-menu { display: block; }
.nav-dropdown-menu a {
    display: block; padding: 10px 20px; font-size: 0.88rem;
    color: var(--text-secondary); transition: all 0.2s;
}
.nav-dropdown-menu a:hover {
    color: var(--text-primary); background: rgba(140, 82, 255, 0.06);
}
.nav-dropdown-menu a::after { display: none; }
/* Hamburger */
.hamburger {
    display: none; flex-direction: column; gap: 5px;
    cursor: pointer; background: none; border: none; padding: 4px;
}
.hamburger span {
    display: block; width: 24px; height: 2px;
    background: var(--text-primary); transition: all 0.3s;
}

/* FOOTER */
.footer {
    padding: 56px 0 28px;
    border-top: 1px solid transparent;
    border-image: linear-gradient(90deg, transparent, rgba(92, 225, 230, 0.2), rgba(140, 82, 255, 0.2), rgba(251, 197, 255, 0.15), transparent) 1;
}
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand p { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.65; margin-top: 16px; max-width: 300px; }
.footer-col h4 {
    font-family: 'Satoshi', sans-serif; font-size: 0.8rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.12em;
    color: var(--text-muted); margin-bottom: 16px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 0.88rem; color: var(--text-secondary); transition: color 0.2s; }
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 24px; border-top: 1px solid var(--border-default);
    font-size: 0.78rem; color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); transition: color 0.2s; }
.footer-bottom a:hover { color: var(--text-secondary); }

/* GSAP REVEAL */
.gs-reveal { opacity: 0; transform: translateY(30px); }

/* SCROLL TO TOP */
.scroll-top {
    position: fixed; bottom: 32px; right: 32px; z-index: 99;
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--bg-elevated); border: 1px solid var(--border-default);
    color: var(--text-secondary); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transform: translateY(10px);
    transition: all 0.3s ease; pointer-events: none;
}
.scroll-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.scroll-top:hover { border-color: var(--border-hover); color: var(--text-primary); }
.scroll-top svg { width: 20px; height: 20px; }

/* CURSOR GLOW */
.cursor-glow {
    position: fixed; width: 600px; height: 600px; border-radius: 50%;
    background: radial-gradient(circle, rgba(92, 225, 230, 0.025) 0%, rgba(140, 82, 255, 0.02) 40%, transparent 70%);
    pointer-events: none; z-index: 1; transform: translate(-50%, -50%);
    opacity: 0; transition: opacity 0.4s ease; will-change: transform;
}
.cursor-glow.active { opacity: 1; }

/* INNER PAGE HERO (for subpages) */
.page-hero {
    padding: 180px 0 80px; text-align: center; position: relative; overflow: hidden;
}
.page-hero .hero-glow {
    position: absolute; width: 600px; height: 600px; border-radius: 50%;
    background: radial-gradient(ellipse at center, rgba(92, 225, 230, 0.06) 0%, rgba(140, 82, 255, 0.04) 40%, transparent 70%);
    top: 50%; left: 50%; transform: translate(-50%, -50%); pointer-events: none;
}
.page-hero h1 { margin-bottom: 20px; }
.page-hero .section-subtext { margin: 0 auto; max-width: 640px; }

/* INNER PAGE CONTENT */
.page-content { padding: 80px 0 140px; }

/* FAQ SECTION (reusable) */
.faq-section { padding: 100px 0; }
.faq-grid { display: grid; gap: 16px; max-width: 800px; margin: 40px auto 0; }
.faq-item {
    background: var(--bg-elevated); border: 1px solid var(--border-default);
    border-radius: 14px; overflow: hidden; transition: border-color 0.3s;
}
.faq-item:hover { border-color: var(--border-hover); }
.faq-question {
    display: flex; justify-content: space-between; align-items: center;
    padding: 24px 28px; cursor: pointer; font-weight: 600;
    font-size: 1rem; color: var(--text-primary); background: none; border: none;
    width: 100%; text-align: left; font-family: 'Satoshi', sans-serif;
}
.faq-question::after {
    content: '+'; font-size: 1.4rem; color: var(--text-muted);
    transition: transform 0.3s; flex-shrink: 0; margin-left: 16px;
}
.faq-item.open .faq-question::after { content: '−'; }
.faq-answer {
    max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
    padding: 0 28px;
}
.faq-answer-inner {
    padding: 0 0 24px; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7;
}
.faq-item.open .faq-answer { max-height: 500px; }

/* FEATURE GRID (reusable) */
.feature-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px;
}
.feature-card {
    background: var(--bg-elevated); border: 1px solid var(--border-default);
    border-radius: 14px; padding: 32px 28px; transition: all 0.3s;
    border-left: 3px solid transparent;
    border-image: linear-gradient(to bottom, var(--cyan), var(--accent), var(--pink)) 1;
    border-image-slice: 0 0 0 1;
}
.feature-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.feature-card h3 { margin-bottom: 12px; }
.feature-card p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.65; }
.feature-icon {
    width: 48px; height: 48px; border-radius: 12px; margin-bottom: 20px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(140, 82, 255, 0.08); color: var(--cyan);
}
.feature-icon svg { width: 24px; height: 24px; }

/* STEPS (reusable how-it-works) */
.steps-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 48px;
}
.step-card { text-align: center; }
.step-number {
    width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 20px;
    display: flex; align-items: center; justify-content: center;
    font-family: 'Clash Display', sans-serif; font-weight: 600; font-size: 1.2rem;
    background: var(--bg-surface); border: 1px solid transparent;
    background-image: linear-gradient(var(--bg-surface), var(--bg-surface)), var(--gradient-brand);
    background-origin: border-box; background-clip: padding-box, border-box;
    color: var(--text-primary);
}
.step-card h3 { margin-bottom: 12px; }
.step-card p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.65; max-width: 320px; margin: 0 auto; }

/* CTA SECTION (reusable) */
.cta-section {
    padding: 120px 0; text-align: center; position: relative; overflow: hidden;
}
.cta-glow {
    position: absolute; width: 700px; height: 700px; border-radius: 50%;
    background: radial-gradient(ellipse at center, rgba(92, 225, 230, 0.06) 0%, rgba(140, 82, 255, 0.05) 35%, rgba(251, 197, 255, 0.03) 55%, transparent 70%);
    top: 50%; left: 50%; transform: translate(-50%, -50%); pointer-events: none;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { margin-bottom: 16px; }
.cta-section .section-subtext { margin: 0 auto 40px; }

/* RESPONSIVE */
@media (max-width: 1024px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    section { padding: 96px 0; }
    .nav-logo img { height: 30px; }
    .hamburger { display: flex; }
    .nav-links {
        position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
        background: rgba(17, 17, 17, 0.98); backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px); flex-direction: column;
        align-items: flex-start; padding: 80px 32px 32px; gap: 24px;
        border-left: 1px solid var(--border-default); transition: right 0.3s ease;
    }
    .nav-links.open { right: 0; }
    .nav-cta { width: 100%; text-align: center; justify-content: center; }
    .nav-dropdown-menu {
        position: static; transform: none; background: transparent;
        border: none; padding: 0; margin: 0; display: block;
        backdrop-filter: none; min-width: auto;
    }
    .nav-dropdown-menu a { padding: 8px 16px; font-size: 0.85rem; }
    .feature-grid { grid-template-columns: 1fr; }
    .steps-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 32px; }
    .page-hero { padding: 140px 0 60px; }
}
@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
    .gs-reveal { opacity: 1; transform: none; }
    .section-label { opacity: 1; transform: none; }
    .section-subtext { opacity: 1; transform: none; }
}