/* =========================================================
   POWERBIRD — Persistent Drone. Powered by the Line.
   ========================================================= */

:root {
    --yellow: #f5c518;
    --yellow-dim: rgba(245, 197, 24, 0.15);
    --yellow-glow: rgba(245, 197, 24, 0.25);
    --bg: #080a0e;
    --bg2: #0d1117;
    --bg3: #111820;
    --surface: #141c26;
    --border: rgba(245, 197, 24, 0.12);
    --text: #e8ecf0;
    --text-muted: #7a8a9a;
    --font: 'Space Grotesk', sans-serif;
    --mono: 'Space Mono', monospace;
    --radius: 8px;
    --transition: 0.25s ease;
    --max-w: 1160px;
}

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

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

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

/* ── Typography ── */
h1, h2, h3 { line-height: 1.15; font-weight: 700; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Container ── */
.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Section Labels ── */
.section-label {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--yellow);
    text-transform: uppercase;
    margin-bottom: 16px;
    opacity: 0.85;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--text);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 620px;
    margin-bottom: 56px;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
}

.btn-primary {
    background: var(--yellow);
    color: #080a0e;
}
.btn-primary:hover {
    background: #ffd740;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(245, 197, 24, 0.35);
}

.btn-ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-ghost:hover {
    border-color: var(--yellow);
    color: var(--yellow);
}

.btn-large {
    padding: 16px 36px;
    font-size: 17px;
}

/* ═══════════════════════════════════
   NAV
═══════════════════════════════════ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 20px 0;
    transition: all var(--transition);
}

.nav.scrolled {
    background: rgba(8, 10, 14, 0.95);
    backdrop-filter: blur(20px);
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-bolt {
    font-size: 20px;
    filter: drop-shadow(0 0 8px var(--yellow));
}

.logo-text {
    font-family: var(--mono);
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--text);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links li a {
    font-size: 14px;
    color: var(--text-muted);
    transition: color var(--transition);
}

.nav-links li a:hover { color: var(--text); }

.nav-cta {
    background: var(--yellow) !important;
    color: #080a0e !important;
    padding: 8px 20px;
    border-radius: var(--radius);
    font-weight: 600;
    transition: all var(--transition) !important;
}

.nav-cta:hover {
    background: #ffd740 !important;
    transform: translateY(-1px);
}

.btn-arrow { font-style: normal; }

.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: all var(--transition);
}

.nav-hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ═══════════════════════════════════
   HERO
═══════════════════════════════════ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(245, 197, 24, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245, 197, 24, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-glow {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(245, 197, 24, 0.08) 0%, transparent 70%);
}

.powerline-svg {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40%;
}

.powerline-svg svg {
    width: 100%;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--max-w);
    margin: 0 auto;
    width: 100%;
}

.hero-badge {
    display: inline-block;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--yellow);
    border: 1px solid rgba(245, 197, 24, 0.3);
    padding: 6px 16px;
    border-radius: 40px;
    margin-bottom: 32px;
}

.hero-title {
    font-size: clamp(3rem, 7vw, 5.5rem);
    line-height: 1.05;
    margin-bottom: 24px;
    color: var(--text);
}

.accent {
    color: var(--yellow);
    text-shadow: 0 0 40px rgba(245, 197, 24, 0.4);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-muted);
    max-width: 560px;
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.stat-value {
    font-family: var(--mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--yellow);
}

.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 48px;
    background: var(--border);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    right: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    z-index: 1;
}

.scroll-indicator span {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 3px;
    color: var(--text-muted);
    writing-mode: vertical-rl;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--yellow), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* ═══════════════════════════════════
   PROBLEM
═══════════════════════════════════ */
.problem {
    padding: 120px 0;
    background: var(--bg2);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.problem-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 36px 32px;
    transition: all var(--transition);
}

.problem-card:hover {
    border-color: rgba(245, 197, 24, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.problem-icon {
    font-size: 2rem;
    margin-bottom: 20px;
}

.problem-card h3 {
    font-family: var(--mono);
    font-size: 1.5rem;
    color: var(--yellow);
    margin-bottom: 12px;
}

.problem-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.problem-insight {
    display: flex;
    align-items: center;
    gap: 24px;
    background: rgba(245, 197, 24, 0.06);
    border: 1px solid rgba(245, 197, 24, 0.2);
    border-radius: 12px;
    padding: 28px 36px;
}

.insight-bar {
    width: 4px;
    height: 64px;
    background: var(--yellow);
    border-radius: 2px;
    flex-shrink: 0;
}

.problem-insight p {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.problem-insight strong { color: var(--text); }

/* ═══════════════════════════════════
   HOW IT WORKS
═══════════════════════════════════ */
.how-it-works {
    padding: 120px 0;
    background: var(--bg);
}

.cycle-steps {
    display: flex;
    align-items: flex-start;
    gap: 0;
    margin-bottom: 80px;
}

.cycle-step {
    flex: 1;
    padding: 36px 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all var(--transition);
    position: relative;
}

.cycle-step:hover {
    border-color: rgba(245, 197, 24, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.step-number {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--yellow);
    opacity: 0.6;
    margin-bottom: 20px;
}

.step-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
}

.step-icon svg {
    width: 100%;
    height: 100%;
}

.cycle-step h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    color: var(--text);
}

.cycle-step p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.cycle-arrow {
    color: var(--yellow);
    font-size: 1.5rem;
    padding: 0 8px;
    margin-top: 80px;
    flex-shrink: 0;
    opacity: 0.5;
}

/* Tech Detail */
.tech-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 56px;
}

.tech-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--text);
}

.tech-text p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 28px;
}

.tech-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tech-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.check {
    color: var(--yellow);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
}

/* Hook Diagram */
.hook-diagram {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.wire-line {
    width: 100%;
    height: 6px;
    background: linear-gradient(90deg, transparent, var(--yellow), transparent);
    border-radius: 3px;
    margin-bottom: -3px;
    position: relative;
    z-index: 2;
    box-shadow: 0 0 20px rgba(245, 197, 24, 0.5);
}

.hook-body {
    background: var(--surface);
    border: 1px solid rgba(245, 197, 24, 0.4);
    border-radius: 12px;
    padding: 24px 32px;
    width: 100%;
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.hook-clamp, .hook-coil, .hook-converter, .hook-output {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 1px;
    padding: 8px 14px;
    border-radius: 6px;
    border: 1px solid var(--border);
    color: var(--text-muted);
}

.hook-clamp { border-color: rgba(245, 197, 24, 0.4); color: var(--yellow); }
.hook-coil { background: rgba(245, 197, 24, 0.05); }
.hook-output { color: var(--yellow); border-color: rgba(245, 197, 24, 0.3); }

.field-rings {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 1;
}

.ring {
    position: absolute;
    border: 1px solid rgba(245, 197, 24, 0.12);
    border-radius: 50%;
    animation: fieldPulse 2.5s ease-out infinite;
}
.r1 { width: 120%; height: 120%; animation-delay: 0s; }
.r2 { width: 160%; height: 160%; animation-delay: 0.6s; }
.r3 { width: 200%; height: 200%; animation-delay: 1.2s; }

@keyframes fieldPulse {
    0% { opacity: 0.4; transform: scale(0.95); }
    100% { opacity: 0; transform: scale(1.05); }
}

/* ═══════════════════════════════════
   USE CASES
═══════════════════════════════════ */
.use-cases {
    padding: 120px 0;
    background: var(--bg2);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.use-case-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 36px 32px;
    transition: all var(--transition);
    position: relative;
}

.use-case-card:hover {
    border-color: rgba(245, 197, 24, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.use-case-card.featured {
    border-color: rgba(245, 197, 24, 0.4);
    background: linear-gradient(135deg, rgba(245,197,24,0.08), var(--surface));
}

.use-case-card.featured:hover {
    box-shadow: 0 20px 60px rgba(245, 197, 24, 0.15);
}

.use-case-card.more {
    background: transparent;
    border-style: dashed;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-muted);
}

.uc-icon {
    font-size: 2rem;
    margin-bottom: 20px;
}

.use-case-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--text);
}

.use-case-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.uc-tag {
    position: absolute;
    top: 16px;
    right: 16px;
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--yellow);
    border: 1px solid rgba(245, 197, 24, 0.3);
    padding: 3px 10px;
    border-radius: 20px;
}

/* ═══════════════════════════════════
   ROADMAP
═══════════════════════════════════ */
.roadmap {
    padding: 120px 0;
    background: var(--bg);
}

.roadmap-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.rm-step {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    padding: 40px 40px 40px 0;
    position: relative;
}

.rm-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--surface);
    border: 2px solid var(--border);
    flex-shrink: 0;
    margin-top: 6px;
    transition: all var(--transition);
}

.rm-dot.active {
    background: var(--yellow);
    border-color: var(--yellow);
    box-shadow: 0 0 20px rgba(245, 197, 24, 0.5);
}

.rm-connector {
    width: 2px;
    height: 40px;
    background: var(--border);
    margin-left: 7px;
}

.rm-phase {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--yellow);
    margin-bottom: 8px;
    opacity: 0.7;
}

.rm-content h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--text);
}

.rm-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    max-width: 600px;
    margin-bottom: 16px;
}

.rm-content ul {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.rm-content ul li {
    font-size: 0.9rem;
    color: var(--text-muted);
    padding-left: 16px;
    position: relative;
}

.rm-content ul li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--yellow);
    opacity: 0.5;
}

/* ═══════════════════════════════════
   TEAM
═══════════════════════════════════ */
.team {
    padding: 120px 0;
    background: var(--bg2);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(2, 380px);
    gap: 32px;
}

.team-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    transition: all var(--transition);
}

.team-card:hover {
    border-color: rgba(245, 197, 24, 0.3);
    transform: translateY(-4px);
}

.team-avatar {
    width: 56px;
    height: 56px;
    background: rgba(245, 197, 24, 0.15);
    border: 1px solid rgba(245, 197, 24, 0.3);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--mono);
    font-size: 16px;
    font-weight: 700;
    color: var(--yellow);
    margin-bottom: 24px;
}

.team-card h3 {
    font-size: 1.2rem;
    margin-bottom: 6px;
    color: var(--text);
}

.team-role {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 1px;
    color: var(--yellow);
    margin-bottom: 16px;
    opacity: 0.8;
}

.team-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ═══════════════════════════════════
   CTA SECTION
═══════════════════════════════════ */
.cta-section {
    padding: 120px 0;
    background: var(--bg);
}

.cta-inner {
    position: relative;
    background: var(--surface);
    border: 1px solid rgba(245, 197, 24, 0.25);
    border-radius: 20px;
    padding: 80px;
    text-align: center;
    overflow: hidden;
}

.cta-glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(245, 197, 24, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.cta-inner h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    max-width: 640px;
    margin: 16px auto 20px;
    color: var(--text);
}

.cta-inner p {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 480px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

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

/* ═══════════════════════════════════
   FOOTER
═══════════════════════════════════ */
.footer {
    background: var(--bg2);
    border-top: 1px solid var(--border);
    padding: 60px 0 32px;
}

.footer-inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-brand .logo-bolt,
.footer-brand .logo-text {
    display: inline;
}

.footer-brand p {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.footer-links {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-muted);
    transition: color var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ═══════════════════════════════════
   ANIMATIONS
═══════════════════════════════════ */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.cycle-step:nth-child(1) { transition-delay: 0.0s; }
.cycle-step:nth-child(3) { transition-delay: 0.1s; }
.cycle-step:nth-child(5) { transition-delay: 0.2s; }
.cycle-step:nth-child(7) { transition-delay: 0.3s; }

.problem-card:nth-child(1) { transition-delay: 0.0s; }
.problem-card:nth-child(2) { transition-delay: 0.1s; }
.problem-card:nth-child(3) { transition-delay: 0.2s; }

.use-case-card:nth-child(1) { transition-delay: 0.0s; }
.use-case-card:nth-child(2) { transition-delay: 0.05s; }
.use-case-card:nth-child(3) { transition-delay: 0.1s; }
.use-case-card:nth-child(4) { transition-delay: 0.15s; }
.use-case-card:nth-child(5) { transition-delay: 0.2s; }
.use-case-card:nth-child(6) { transition-delay: 0.25s; }

/* ═══════════════════════════════════
   NAV RESERVE BUTTON
═══════════════════════════════════ */
.nav-reserve {
    font-family: var(--font);
    cursor: pointer;
    border: none;
    padding: 8px 20px !important;
}

/* ═══════════════════════════════════
   RESERVE MODAL
═══════════════════════════════════ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: var(--bg2);
    border: 1px solid rgba(245, 197, 24, 0.25);
    border-radius: 20px;
    padding: 48px;
    width: 100%;
    max-width: 560px;
    position: relative;
    transform: translateY(24px);
    transition: transform 0.25s ease;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all var(--transition);
}

.modal-close:hover {
    background: var(--surface);
    color: var(--text);
}

.modal-header {
    margin-bottom: 32px;
}

.modal-icon {
    font-size: 2rem;
    margin-bottom: 16px;
    filter: drop-shadow(0 0 10px var(--yellow));
}

.modal-header h2 {
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.modal-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Form */
.modal-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    font-family: var(--font);
    font-size: 14px;
    color: var(--text);
    outline: none;
    transition: border-color var(--transition);
    width: 100%;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.5;
}

.form-group select option {
    background: var(--bg2);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: rgba(245, 197, 24, 0.5);
    box-shadow: 0 0 0 3px rgba(245, 197, 24, 0.08);
}

.btn-full { width: 100%; justify-content: center; padding: 16px; font-size: 16px; }

.form-note {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    opacity: 0.6;
    margin-top: -8px;
}

/* Success state */
.modal-success {
    text-align: center;
    padding: 24px 0;
}

.success-icon {
    width: 64px;
    height: 64px;
    background: rgba(245, 197, 24, 0.15);
    border: 2px solid var(--yellow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--yellow);
    margin: 0 auto 24px;
}

.modal-success h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.modal-success p {
    color: var(--text-muted);
    margin-bottom: 32px;
}

/* ═══════════════════════════════════
   RESPONSIVE
═══════════════════════════════════ */
@media (max-width: 900px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(8, 10, 14, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
    }
    .nav-links.open { display: flex; }
    .nav-hamburger { display: flex; }

    .problem-grid { grid-template-columns: 1fr; }
    .use-cases-grid { grid-template-columns: 1fr 1fr; }
    .team-grid { grid-template-columns: 1fr; }

    .cycle-steps {
        flex-direction: column;
        gap: 0;
    }
    .cycle-arrow {
        transform: rotate(90deg);
        margin: 4px auto;
    }

    .tech-detail {
        grid-template-columns: 1fr;
        padding: 40px;
        gap: 40px;
    }

    .cta-inner { padding: 48px 32px; }
    .form-row { grid-template-columns: 1fr; }
    .modal { padding: 32px 24px; }
}

@media (max-width: 600px) {
    .section-title { font-size: 1.8rem; }
    .hero-title { font-size: 2.6rem; }
    .hero-stats { gap: 24px; }
    .use-cases-grid { grid-template-columns: 1fr; }
    .hero-ctas { flex-direction: column; }
    .rm-step { padding-right: 0; }
    .tech-detail { padding: 28px 20px; }
}