/* ═══════════════════════════════════════════════════════════
   NexPlan — Design System
   Premium SaaS landing page for shift planning platform
   ═══════════════════════════════════════════════════════════ */

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

:root {
    --np-bg: #0a0a1a;
    --np-surface: #111128;
    --np-surface-2: #1a1a3e;
    --np-border: rgba(99, 102, 241, 0.15);
    --np-border-hover: rgba(99, 102, 241, 0.35);
    --np-text: #e2e8f0;
    --np-text-muted: #94a3b8;
    --np-text-dim: #64748b;
    --np-primary: #6366f1;
    --np-primary-light: #818cf8;
    --np-primary-glow: rgba(99, 102, 241, 0.25);
    --np-accent: #a78bfa;
    --np-success: #34d399;
    --np-warning: #fbbf24;
    --np-danger: #f87171;
    --np-gradient: linear-gradient(135deg, #6366f1, #818cf8, #a78bfa);
    --np-gradient-subtle: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(129,140,248,0.05));
    --np-radius: 16px;
    --np-radius-sm: 10px;
    --np-radius-xs: 6px;
    --np-shadow: 0 4px 24px rgba(0,0,0,0.3);
    --np-shadow-glow: 0 0 40px rgba(99,102,241,0.15);
    --np-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --np-container: 1200px;
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
    max-width: var(--np-container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Navigation ──────────────────────────────────────────── */
#nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(10, 10, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--np-border);
    transition: all 0.3s ease;
}
#nav.scrolled { background: rgba(10, 10, 26, 0.95); box-shadow: var(--np-shadow); }

.nav-inner {
    max-width: var(--np-container);
    margin: 0 auto;
    padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
    height: 72px;
}

.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.25rem; }
.logo-icon { font-size: 1.5rem; filter: drop-shadow(0 0 8px var(--np-primary-glow)); }
.logo-accent { color: var(--np-primary-light); }

.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { font-size: 0.9rem; font-weight: 500; color: var(--np-text-muted); transition: color 0.2s; }
.nav-links a:hover { color: var(--np-text); }

.btn-nav {
    background: var(--np-primary) !important;
    color: white !important;
    padding: 8px 20px;
    border-radius: var(--np-radius-xs);
    font-weight: 600;
    transition: all 0.2s;
}
.btn-nav:hover { background: var(--np-primary-light) !important; transform: translateY(-1px); }

.mobile-toggle {
    display: none; background: none; border: none; cursor: pointer;
    flex-direction: column; gap: 5px; padding: 8px;
}
.mobile-toggle span {
    display: block; width: 22px; height: 2px;
    background: var(--np-text); border-radius: 2px;
    transition: all 0.3s;
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: var(--np-font); font-weight: 600; font-size: 0.95rem;
    border: none; border-radius: var(--np-radius-sm);
    cursor: pointer; transition: all 0.25s ease;
    text-decoration: none;
}
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-block { width: 100%; justify-content: center; padding: 14px; }

.btn-primary {
    background: var(--np-gradient);
    color: white;
    box-shadow: 0 4px 16px var(--np-primary-glow);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px var(--np-primary-glow);
}

.btn-outline {
    background: transparent;
    color: var(--np-text);
    border: 1px solid var(--np-border-hover);
}
.btn-outline:hover {
    background: var(--np-gradient-subtle);
    border-color: var(--np-primary);
    transform: translateY(-2px);
}

.btn-ghost {
    background: rgba(255,255,255,0.06);
    color: var(--np-text);
    border: 1px solid rgba(255,255,255,0.1);
}
.btn-ghost:hover { background: rgba(255,255,255,0.1); }

/* ── Hero ────────────────────────────────────────────────── */
#hero {
    position: relative;
    padding: 160px 0 100px;
    text-align: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute; inset: 0;
    pointer-events: none; z-index: 0;
}
.hero-glow {
    position: absolute;
    top: -200px; left: 50%; transform: translateX(-50%);
    width: 800px; height: 600px;
    background: radial-gradient(ellipse, var(--np-primary-glow), transparent 70%);
    filter: blur(80px);
    animation: pulse-glow 6s ease-in-out infinite alternate;
}
.hero-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(99,102,241,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black 30%, transparent 100%);
}

@keyframes pulse-glow {
    0% { opacity: 0.5; transform: translateX(-50%) scale(1); }
    100% { opacity: 0.8; transform: translateX(-50%) scale(1.1); }
}

.hero-content { position: relative; z-index: 1; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 20px;
    border-radius: 100px;
    font-size: 0.82rem; font-weight: 500;
    color: var(--np-primary-light);
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.2);
    margin-bottom: 28px;
}

#hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

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

.hero-sub {
    font-size: 1.15rem;
    color: var(--np-text-muted);
    max-width: 560px;
    margin: 0 auto 36px;
    line-height: 1.7;
}

.hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 60px; }

.hero-stats {
    display: flex; gap: 48px; justify-content: center;
    padding-top: 48px;
    border-top: 1px solid var(--np-border);
}
.stat { text-align: center; }
.stat-value {
    display: block;
    font-size: 1.75rem; font-weight: 800;
    background: var(--np-gradient);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label { font-size: 0.82rem; color: var(--np-text-dim); font-weight: 500; }

/* ── Sections ────────────────────────────────────────────── */
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
    display: inline-block; padding: 6px 16px;
    border-radius: 100px; font-size: 0.78rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--np-primary-light);
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.2);
    margin-bottom: 20px;
}
.section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800; letter-spacing: -0.02em;
    line-height: 1.2; margin-bottom: 16px;
}
.section-header p { font-size: 1.05rem; color: var(--np-text-muted); max-width: 540px; margin: 0 auto; }

/* ── Features ────────────────────────────────────────────── */
#features { padding: 100px 0; }
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--np-surface);
    border: 1px solid var(--np-border);
    border-radius: var(--np-radius);
    padding: 32px;
    transition: all 0.3s ease;
}
.feature-card:hover {
    border-color: var(--np-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--np-shadow-glow);
}
.feature-icon {
    width: 52px; height: 52px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    background: hsl(var(--hue, 240), 70%, 50%, 0.12);
    color: hsl(var(--hue, 240), 70%, 65%);
    margin-bottom: 20px;
}
.feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 0.9rem; color: var(--np-text-muted); line-height: 1.6; }

/* ── Social Proof ────────────────────────────────────────── */
#proof { padding: 60px 0; }
.proof-card {
    background: var(--np-surface);
    border: 1px solid var(--np-border);
    border-radius: var(--np-radius);
    padding: 48px;
    text-align: center;
}
.proof-quote {
    font-size: 1.3rem; font-weight: 500; font-style: italic;
    color: var(--np-text);
    max-width: 640px; margin: 0 auto 32px;
    line-height: 1.6;
}
.proof-author { display: flex; align-items: center; gap: 14px; justify-content: center; margin-bottom: 32px; }
.proof-avatar {
    width: 48px; height: 48px; border-radius: 50%;
    background: var(--np-gradient);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 1rem; color: white;
}
.proof-name { font-weight: 600; }
.proof-role { font-size: 0.85rem; color: var(--np-text-muted); }
.proof-metrics {
    display: flex; gap: 48px; justify-content: center;
    padding-top: 24px;
    border-top: 1px solid var(--np-border);
    font-size: 0.9rem; color: var(--np-text-muted);
}
.proof-metrics strong { color: var(--np-text); font-size: 1.1rem; }

/* ── Pricing ─────────────────────────────────────────────── */
#pricing { padding: 100px 0; }

.pricing-toggle {
    display: flex; align-items: center; gap: 14px;
    justify-content: center;
    margin-bottom: 48px;
}
.toggle-label { font-size: 0.9rem; font-weight: 500; color: var(--np-text-dim); cursor: pointer; transition: color 0.2s; }
.toggle-label.active { color: var(--np-text); }
.toggle-badge {
    display: inline-block; padding: 2px 8px; border-radius: 100px;
    font-size: 0.72rem; font-weight: 700;
    background: var(--np-success); color: var(--np-bg);
}
.toggle-switch {
    position: relative; width: 48px; height: 26px;
    border-radius: 100px; border: none; cursor: pointer;
    background: var(--np-surface-2);
    border: 1px solid var(--np-border);
    transition: background 0.2s;
}
.toggle-knob {
    position: absolute; top: 3px; left: 3px;
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--np-primary);
    transition: transform 0.25s ease;
}
.toggle-switch.annual .toggle-knob { transform: translateX(22px); }

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.pricing-card {
    background: var(--np-surface);
    border: 1px solid var(--np-border);
    border-radius: var(--np-radius);
    padding: 36px 28px;
    position: relative;
    transition: all 0.3s ease;
}
.pricing-card:hover {
    border-color: var(--np-border-hover);
    transform: translateY(-4px);
}
.pricing-card.featured {
    border-color: var(--np-primary);
    box-shadow: var(--np-shadow-glow);
    transform: scale(1.04);
}
.pricing-card.featured:hover { transform: scale(1.04) translateY(-4px); }

.pricing-badge {
    position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
    padding: 4px 16px; border-radius: 100px;
    font-size: 0.75rem; font-weight: 700;
    background: var(--np-gradient); color: white;
}

.pricing-header { margin-bottom: 24px; }
.pricing-header h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 6px; }
.pricing-header p { font-size: 0.85rem; color: var(--np-text-muted); }

.pricing-price { margin-bottom: 24px; display: flex; align-items: baseline; gap: 4px; }
.price-amount { font-size: 3rem; font-weight: 800; color: var(--np-text); }
.price-unit { font-size: 0.9rem; color: var(--np-text-muted); }
.price-period { font-size: 0.85rem; }

.pricing-features { list-style: none; margin-bottom: 28px; }
.pricing-features li {
    padding: 8px 0; font-size: 0.9rem; color: var(--np-text-muted);
    border-bottom: 1px solid rgba(255,255,255,0.04);
    display: flex; align-items: center; gap: 8px;
}
.pricing-features li::before {
    content: '✓'; color: var(--np-success); font-weight: 700; font-size: 0.8rem;
}

/* ── Demo Form ───────────────────────────────────────────── */
#demo { padding: 100px 0; }

.demo-wrapper {
    display: grid; grid-template-columns: 1fr 1fr; gap: 64px;
    background: var(--np-surface);
    border: 1px solid var(--np-border);
    border-radius: var(--np-radius);
    padding: 56px;
}

.demo-info h2 {
    font-size: 2rem; font-weight: 800;
    line-height: 1.2; margin-bottom: 16px;
}
.demo-info p { color: var(--np-text-muted); margin-bottom: 32px; line-height: 1.7; }

.demo-benefits { display: flex; flex-direction: column; gap: 16px; }
.demo-benefit {
    display: flex; align-items: center; gap: 12px;
    color: var(--np-success); font-size: 0.95rem; font-weight: 500;
}

.demo-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
    font-size: 0.82rem; font-weight: 600; color: var(--np-text-muted);
}
.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 14px; border-radius: var(--np-radius-xs);
    border: 1px solid var(--np-border);
    background: var(--np-bg);
    color: var(--np-text);
    font-family: var(--np-font);
    font-size: 0.9rem;
    transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--np-primary);
    box-shadow: 0 0 0 3px var(--np-primary-glow);
}
.form-group select { cursor: pointer; }
.form-group textarea { resize: vertical; min-height: 80px; }

.form-note { font-size: 0.78rem; color: var(--np-text-dim); text-align: center; margin-top: 8px; }

/* ── Footer ──────────────────────────────────────────────── */
#footer {
    padding: 64px 0 32px;
    border-top: 1px solid var(--np-border);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}
.footer-brand p { color: var(--np-text-muted); font-size: 0.9rem; margin-top: 12px; max-width: 280px; }
.footer-col h4 { font-size: 0.82rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--np-text-dim); margin-bottom: 16px; }
.footer-col a { display: block; font-size: 0.9rem; color: var(--np-text-muted); padding: 4px 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--np-primary-light); }
.footer-location { font-size: 0.85rem; color: var(--np-text-dim); margin-top: 8px; }
.footer-bottom { padding-top: 24px; border-top: 1px solid var(--np-border); text-align: center; }
.footer-bottom p { font-size: 0.82rem; color: var(--np-text-dim); }

/* ── Animations ──────────────────────────────────────────── */
.reveal {
    opacity: 0; transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-card.featured { transform: scale(1); }
    .pricing-card.featured:hover { transform: translateY(-4px); }
    .pricing-card:nth-child(3) { grid-column: span 2; max-width: 420px; margin: 0 auto; }
    .demo-wrapper { grid-template-columns: 1fr; gap: 40px; padding: 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed; top: 72px; left: 0; right: 0;
        background: rgba(10,10,26,0.98);
        backdrop-filter: blur(20px);
        flex-direction: column; gap: 0; padding: 16px;
        border-bottom: 1px solid var(--np-border);
        display: none;
    }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 14px 0; width: 100%; text-align: center; border-bottom: 1px solid var(--np-border); }
    .mobile-toggle { display: flex; }

    #hero { padding: 120px 0 60px; }
    #hero h1 { font-size: 2.2rem; }
    .hero-sub { font-size: 1rem; }
    .hero-actions { flex-direction: column; align-items: center; }
    .hero-stats { flex-wrap: wrap; gap: 24px; }

    .features-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .pricing-card:nth-child(3) { grid-column: span 1; max-width: none; }

    .form-row { grid-template-columns: 1fr; }
    .demo-wrapper { padding: 28px; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .proof-metrics { flex-direction: column; gap: 16px; }
}