/* ========================================
   AI Sales Landing Page — CSS
   ======================================== */

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

:root {
    --bg-primary: #07080d;
    --bg-secondary: #0d0f17;
    --bg-card: rgba(255,255,255,0.03);
    --bg-card-hover: rgba(255,255,255,0.06);
    --text-primary: #f0f2f5;
    --text-secondary: rgba(240,242,245,0.6);
    --text-muted: rgba(240,242,245,0.35);
    --accent-blue: #4f8cff;
    --accent-purple: #a855f7;
    --accent-green: #25d366;
    --accent-cyan: #22d3ee;
    --gradient-main: linear-gradient(135deg, #4f8cff 0%, #a855f7 50%, #22d3ee 100%);
    --gradient-glow:  linear-gradient(135deg, rgba(79,140,255,.15) 0%, rgba(168,85,247,.15) 100%);
    --border: rgba(255,255,255,0.06);
    --border-hover: rgba(255,255,255,0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-glow: 0 0 80px rgba(79,140,255,.08);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: .3s cubic-bezier(.4,0,.2,1);
}

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

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* --- Typography --- */
h1 { font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; }
h3 { font-size: 1.15rem; font-weight: 600; line-height: 1.3; }

.gradient-text {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Navbar --- */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    padding: 16px 0;
    background: rgba(7,8,13,0.6);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}
.navbar.scrolled { padding: 10px 0; background: rgba(7,8,13,0.9); }

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

.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.4rem; }
.logo-icon { font-size: 1.6rem; }
.logo-accent { color: var(--accent-blue); }

.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a { font-size: .9rem; font-weight: 500; color: var(--text-secondary); transition: var(--transition); }
.nav-links a:hover { color: var(--text-primary); }

.nav-cta {
    padding: 10px 24px;
    background: var(--gradient-main);
    border-radius: 100px;
    font-size: .875rem;
    font-weight: 600;
    color: #fff;
    transition: var(--transition);
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 30px rgba(79,140,255,.3); }

.mobile-menu-btn { display: none; flex-direction: column; gap: 5px; padding: 4px; }
.mobile-menu-btn span { display: block; width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }

@media (max-width: 768px) {
    .nav-links, .nav-cta { display: none; }
    .mobile-menu-btn { display: flex; }
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute; inset: 0;
    background: url('hero-bg.png') center/cover no-repeat;
    opacity: 0.35;
    z-index: 0;
}

.hero-bg::after {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at center, transparent 0%, var(--bg-primary) 75%);
}

.hero-particles {
    position: absolute; inset: 0; z-index: 1;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 3px; height: 3px;
    background: var(--accent-blue);
    border-radius: 50%;
    opacity: 0;
    animation: float-particle 8s infinite;
}

@keyframes float-particle {
    0% { opacity: 0; transform: translateY(100vh) scale(0); }
    10% { opacity: .6; }
    90% { opacity: .6; }
    100% { opacity: 0; transform: translateY(-100px) scale(1); }
}

.hero-content { position: relative; z-index: 2; text-align: center; max-width: 800px; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: .8rem; font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.badge-dot {
    width: 6px; height: 6px;
    background: var(--accent-green);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(37,211,102,.4); }
    50% { box-shadow: 0 0 0 8px rgba(37,211,102,0); }
}

.hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 24px auto 40px;
    line-height: 1.7;
}

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

.hero-stats {
    display: flex; align-items: center; justify-content: center; gap: 40px;
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.stat { text-align: center; }
.stat-number { font-size: 2.4rem; font-weight: 800; color: var(--text-primary); }
.stat-suffix { font-size: 1.4rem; font-weight: 700; color: var(--accent-blue); }
.stat-label { display: block; font-size: .8rem; color: var(--text-muted); margin-top: 4px; text-transform: uppercase; letter-spacing: .08em; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

.hero-scroll-indicator {
    position: absolute; bottom: 32px; left: 50%;
    transform: translateX(-50%); z-index: 2;
}
.scroll-line { width: 1px; height: 40px; background: linear-gradient(to bottom, var(--accent-blue), transparent); animation: scroll-pulse 2s infinite; }
@keyframes scroll-pulse { 0%,100% { opacity: .3; } 50% { opacity: 1; } }

@media (max-width: 600px) {
    .hero-stats { flex-direction: column; gap: 24px; }
    .stat-divider { width: 40px; height: 1px; }
}

/* --- Buttons --- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px;
    border-radius: 100px;
    font-size: .9rem; font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-lg { padding: 16px 36px; font-size: 1rem; }

.btn-primary {
    background: var(--gradient-main);
    color: #fff;
    box-shadow: 0 4px 20px rgba(79,140,255,.2);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 40px rgba(79,140,255,.35); }

.btn-ghost {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}
.btn-ghost:hover { background: var(--bg-card-hover); color: var(--text-primary); border-color: var(--border-hover); }

.btn-whatsapp {
    background: var(--accent-green);
    color: #fff;
    box-shadow: 0 4px 20px rgba(37,211,102,.25);
}
.btn-whatsapp:hover { transform: translateY(-2px); box-shadow: 0 8px 40px rgba(37,211,102,.4); background: #20bd5a; }

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

/* --- Sections --- */
.section { padding: 120px 0; position: relative; }
.section-dark { background: var(--bg-secondary); }

.section-header { text-align: center; max-width: 600px; margin: 0 auto 64px; }

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--gradient-glow);
    border: 1px solid rgba(79,140,255,.15);
    border-radius: 100px;
    font-size: .75rem; font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--accent-blue);
    margin-bottom: 20px;
}

.section-subtitle { color: var(--text-secondary); margin-top: 16px; font-size: 1.05rem; }

/* --- Steps --- */
.steps-grid {
    display: flex; align-items: flex-start; justify-content: center;
    gap: 0; flex-wrap: wrap;
}

.step-card {
    flex: 1; min-width: 180px; max-width: 220px;
    text-align: center;
    padding: 32px 16px;
    position: relative;
}

.step-number {
    font-size: .7rem; font-weight: 700;
    color: var(--accent-blue);
    letter-spacing: .1em;
    margin-bottom: 16px;
}

.step-icon { font-size: 2.4rem; margin-bottom: 16px; }
.step-card h3 { margin-bottom: 8px; }
.step-card p { font-size: .85rem; color: var(--text-secondary); line-height: 1.6; }

.step-connector {
    width: 40px; height: 2px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    margin-top: 80px;
    border-radius: 2px;
    opacity: .3;
}

@media (max-width: 900px) {
    .step-connector { display: none; }
    .steps-grid { flex-direction: column; align-items: center; }
    .step-card { max-width: 360px; }
}

/* --- Comparison Table --- */
.comparison-table {
    max-width: 700px; margin: 0 auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.comparison-header, .comparison-row { display: grid; grid-template-columns: 1fr 1fr 1fr; }

.comparison-header {
    background: rgba(79,140,255,.06);
    border-bottom: 1px solid var(--border);
}

.comparison-col {
    padding: 16px 20px;
    font-size: .875rem;
    font-weight: 500;
}

.comparison-header .comparison-col { font-weight: 700; font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); }

.comparison-row { border-bottom: 1px solid var(--border); transition: var(--transition); }
.comparison-row:last-child { border-bottom: none; }
.comparison-row:hover { background: var(--bg-card); }

.comparison-old { color: var(--text-muted); }
.comparison-new { color: var(--accent-green); font-weight: 600; }

@media (max-width: 600px) {
    .comparison-col { padding: 12px 10px; font-size: .75rem; }
}

/* --- Features --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    padding: 32px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

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

.feature-icon { font-size: 2rem; margin-bottom: 16px; }
.feature-card h3 { margin-bottom: 8px; }
.feature-card p { font-size: .875rem; color: var(--text-secondary); line-height: 1.6; }

@media (max-width: 900px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .features-grid { grid-template-columns: 1fr; } }

/* --- Cases --- */
.cases-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

.case-card {
    padding: 36px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

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

.case-emoji { font-size: 2.4rem; margin-bottom: 16px; }
.case-card h3 { margin-bottom: 8px; }
.case-card p { font-size: .875rem; color: var(--text-secondary); line-height: 1.7; }

@media (max-width: 600px) { .cases-grid { grid-template-columns: 1fr; } }

/* --- Funnel --- */
.funnel { max-width: 600px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }

.funnel-step { display: flex; align-items: center; gap: 20px; }

.funnel-bar {
    height: 48px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    transition: var(--transition);
}

.funnel-1 .funnel-bar { width: 100%; background: linear-gradient(90deg, rgba(79,140,255,.2), rgba(79,140,255,.05)); border: 1px solid rgba(79,140,255,.15); }
.funnel-2 .funnel-bar { width: 82%; background: linear-gradient(90deg, rgba(79,140,255,.25), rgba(168,85,247,.08)); border: 1px solid rgba(79,140,255,.18); }
.funnel-3 .funnel-bar { width: 60%; background: linear-gradient(90deg, rgba(168,85,247,.25), rgba(168,85,247,.08)); border: 1px solid rgba(168,85,247,.18); }
.funnel-4 .funnel-bar { width: 35%; background: linear-gradient(90deg, rgba(34,211,238,.25), rgba(34,211,238,.08)); border: 1px solid rgba(34,211,238,.18); }
.funnel-5 .funnel-bar { width: 18%; background: linear-gradient(90deg, rgba(37,211,102,.35), rgba(37,211,102,.1)); border: 1px solid rgba(37,211,102,.25); }

.funnel-info { flex: 1; min-width: 0; }

.funnel-label { display: block; font-weight: 600; font-size: .9rem; }
.funnel-desc { display: block; font-size: .78rem; color: var(--text-muted); margin-top: 2px; }

@media (max-width: 600px) {
    .funnel-step { flex-direction: column; align-items: flex-start; gap: 6px; }
    .funnel-bar { height: 24px; }
    .funnel-1 .funnel-bar, .funnel-2 .funnel-bar, .funnel-3 .funnel-bar, .funnel-4 .funnel-bar, .funnel-5 .funnel-bar { width: 100%; }
}

/* --- Timeline --- */
.timeline { max-width: 600px; margin: 0 auto; position: relative; padding-left: 40px; }

.timeline::before {
    content: '';
    position: absolute;
    left: 11px; top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-blue), var(--accent-purple), var(--accent-green));
    border-radius: 2px;
}

.timeline-item { position: relative; padding-bottom: 40px; }
.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
    position: absolute;
    left: -34px; top: 4px;
    width: 14px; height: 14px;
    background: var(--accent-blue);
    border: 3px solid var(--bg-secondary);
    border-radius: 50%;
    z-index: 1;
}

.timeline-content {
    padding: 20px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.timeline-day {
    display: inline-block;
    font-size: .7rem;
    font-weight: 700;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: .1em;
    margin-bottom: 8px;
}

.timeline-content h3 { margin-bottom: 4px; }
.timeline-content p { font-size: .85rem; color: var(--text-secondary); }

/* --- FAQ --- */
.faq-list { max-width: 700px; margin: 0 auto; display: flex; flex-direction: column; gap: 8px; }

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.open { border-color: var(--border-hover); background: var(--bg-card); }

.faq-question {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    width: 100%;
    padding: 20px 24px;
    text-align: left;
    font-weight: 600;
    font-size: .95rem;
    transition: var(--transition);
}

.faq-question:hover { color: var(--accent-blue); }

.faq-chevron { flex-shrink: 0; transition: var(--transition); color: var(--text-muted); }
.faq-item.open .faq-chevron { transform: rotate(180deg); color: var(--accent-blue); }

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s ease, padding .4s ease;
}

.faq-item.open .faq-answer { max-height: 300px; }

.faq-answer p {
    padding: 0 24px 20px;
    font-size: .9rem; color: var(--text-secondary); line-height: 1.7;
}

/* --- CTA --- */
.section-cta {
    background: var(--bg-primary);
    text-align: center;
    padding: 140px 0;
    position: relative;
    overflow: hidden;
}

.section-cta::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at center, rgba(79,140,255,.06) 0%, transparent 60%);
    pointer-events: none;
}

.cta-content { position: relative; z-index: 1; }
.cta-content h2 { margin-bottom: 16px; }
.cta-content > p { color: var(--text-secondary); margin-bottom: 40px; font-size: 1.05rem; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* --- Footer --- */
.footer {
    padding: 32px 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 16px;
}

.footer-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.1rem; }
.footer-copy { font-size: .8rem; color: var(--text-muted); }

.footer-badges { display: flex; gap: 16px; }
.footer-badge { font-size: .75rem; color: var(--text-muted); }

@media (max-width: 600px) { .footer-content { justify-content: center; text-align: center; } .footer-badges { flex-direction: column; align-items: center; } }

/* --- Animations --- */
[data-animate] { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
[data-animate].visible { opacity: 1; transform: translateY(0); }