@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --color-canvas: #07080a;
    --color-surface: #0f1114;
    --color-surface-elevated: #16191d;
    --color-surface-card: #1c2024;
    --color-primary: #ffffff;
    --color-on-primary: #000000;
    --color-hairline: #242728;
    --color-hairline-strong: #333638;
    --color-body: #888d91;
    --color-on-dark: #ededef;
    --color-ash: #4c5155;
    --color-accent: #ff6b35;
    --color-accent-glow: rgba(255,107,53,0.15);
    --color-green: #10b981;
    --color-yellow: #f59e0b;
    --color-red: #ef4444;
    --color-blue: #3b82f6;
    --color-purple: #a855f7;
    --spacing-section: 120px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 350ms cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--color-canvas);
    color: var(--color-on-dark);
    font-family: 'Inter', system-ui, sans-serif;
    font-feature-settings: "calt", "kern", "liga", "ss03";
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
    overflow-x: hidden;
}

/* ── Typography ── */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.05; letter-spacing: -0.035em; }
.display-xl { font-size: clamp(40px, 5.5vw, 76px); font-weight: 800; }
.display-lg { font-size: clamp(32px, 4vw, 56px); font-weight: 700; }
.heading-xl { font-size: 22px; font-weight: 600; letter-spacing: -0.02em; }
.body-md { font-size: 16px; color: var(--color-body); line-height: 1.65; }
.body-lg { font-size: 19px; color: var(--color-body); line-height: 1.6; }
.label-sm { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; }
.mono { font-family: 'JetBrains Mono', 'SF Mono', monospace; }

/* ── Layout ── */
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.section { padding: var(--spacing-section) 0; }

/* ── Sticky Nav ── */
.nav { position: sticky; top: 0; z-index: 200; height: 64px; display: flex; align-items: center; background: rgba(7,8,10,0.75); backdrop-filter: blur(16px) saturate(1.8); border-bottom: 1px solid transparent; transition: border-color var(--transition-base); }
.nav.scrolled { border-bottom-color: var(--color-hairline); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; letter-spacing: -0.5px; text-decoration: none; color: inherit; }
.nav-logo-icon { width: 30px; height: 30px; background: linear-gradient(135deg, #ff3131, #ff9100); border-radius: 7px; display: grid; place-items: center; }
.nav-links { display: flex; gap: 8px; align-items: center; }
.nav-link { font-size: 13px; font-weight: 500; color: var(--color-body); text-decoration: none; padding: 6px 14px; border-radius: var(--radius-sm); transition: var(--transition-fast); }
.nav-link:hover { color: var(--color-on-dark); background: var(--color-surface); }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: var(--radius-md); font-weight: 600; font-size: 14px; border: none; cursor: pointer; text-decoration: none; transition: var(--transition-fast); }
.btn-primary { background: var(--color-primary); color: var(--color-on-primary); }
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--color-on-dark); border: 1px solid var(--color-hairline); }
.btn-ghost:hover { border-color: var(--color-hairline-strong); background: var(--color-surface); }
.btn-accent { background: linear-gradient(135deg, #ff3131, #ff6b35); color: white; }
.btn-accent:hover { filter: brightness(1.1); transform: translateY(-1px); }

/* ── Badge ── */
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 700; padding: 4px 12px; border-radius: var(--radius-sm); text-transform: uppercase; letter-spacing: 0.08em; }
.badge-surface { background: var(--color-surface-card); border: 1px solid var(--color-hairline); color: var(--color-ash); }
.badge-accent { background: var(--color-accent-glow); color: var(--color-accent); border: 1px solid rgba(255,107,53,0.2); }
.badge-green { background: rgba(16,185,129,0.12); color: var(--color-green); }
.badge-yellow { background: rgba(245,158,11,0.12); color: var(--color-yellow); }
.badge-red { background: rgba(239,68,68,0.12); color: var(--color-red); }

/* ── Cards ── */
.card { background: var(--color-surface); border: 1px solid var(--color-hairline); border-radius: var(--radius-lg); padding: 28px; transition: var(--transition-base); }
.card:hover { border-color: var(--color-hairline-strong); }
.card-elevated { background: var(--color-surface-elevated); }

/* ── Hero ── */
.hero { position: relative; padding: 100px 0 80px; overflow: hidden; min-height: 90vh; display: flex; align-items: center; }
.hero-glow { position: absolute; top: -200px; left: 50%; transform: translateX(-50%); width: 900px; height: 600px; background: radial-gradient(ellipse, rgba(255,107,53,0.12) 0%, transparent 70%); pointer-events: none; z-index: 0; }
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 850px; margin: 0 auto; }
.hero-subtitle { max-width: 640px; margin: 0 auto; }

/* ── Mockup ── */
.mockup { margin-top: 56px; background: var(--color-surface); border: 1px solid var(--color-hairline); border-radius: var(--radius-xl); overflow: hidden; box-shadow: 0 60px 120px -20px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.04); max-width: 960px; margin-left: auto; margin-right: auto; }
.mockup-bar { padding: 10px 16px; border-bottom: 1px solid var(--color-hairline); display: flex; align-items: center; gap: 8px; background: var(--color-surface-elevated); }
.mockup-dot { width: 10px; height: 10px; border-radius: 50%; }
.mockup-title { margin-left: 12px; font-size: 12px; color: var(--color-ash); }
.mockup-rows { padding: 6px; }
.mockup-row { padding: 10px 14px; display: flex; align-items: center; gap: 12px; border-radius: var(--radius-sm); cursor: pointer; transition: var(--transition-fast); }
.mockup-row:hover, .mockup-row.active { background: var(--color-surface-card); }
.mockup-row-icon { width: 28px; height: 28px; border-radius: 6px; display: grid; place-items: center; flex-shrink: 0; }
.mockup-row-label { font-size: 13px; font-weight: 500; flex: 1; }
.mockup-row-status { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }
.mockup-footer { padding: 12px 16px; border-top: 1px solid var(--color-hairline); background: var(--color-surface-elevated); display: flex; justify-content: space-between; align-items: center; font-size: 11px; }
.progress-bar { width: 140px; height: 5px; background: #1a1d21; border-radius: 3px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 3px; transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1); }

/* ── Comparison ── */
.comparison { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--color-hairline); border-radius: var(--radius-lg); overflow: hidden; }
.comparison-side { padding: 32px 32px; display: flex; flex-direction: column; }
.comparison-left { background: var(--color-canvas); border-right: 1px solid var(--color-hairline); }
.comparison-right { background: var(--color-surface); }
.comparison-item { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 4px; font-size: 14px; cursor: pointer; padding: 10px 12px; border-radius: 8px; transition: var(--transition-fast); border: 1px solid transparent; }
.comparison-item:hover, .comparison-item.active { background: var(--color-surface-card); border-color: var(--color-hairline); }

/* Comparison Visuals */
.comparison-visual-box { margin-top: auto; padding-top: 16px; }
.excel-mockup { background: #fff; border-radius: 8px; padding: 12px; font-family: sans-serif; color: #333; }
.excel-header { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; background: #f0f0f0; padding: 6px 8px; font-weight: 700; font-size: 10px; border-radius: 4px; margin-bottom: 4px; }
.excel-row { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; padding: 6px 8px; font-size: 10px; border-bottom: 1px solid #eee; }
.excel-errors { margin-top: 12px; background: rgba(255,95,86,0.05); border: 1px solid rgba(255,95,86,0.2); padding: 10px; border-radius: 6px; }
.excel-error-item { font-size: 11px; color: var(--color-red); margin-bottom: 6px; display: flex; align-items: center; gap: 8px; opacity: 0.4; transition: var(--transition-fast); }
.excel-error-item:last-child { margin-bottom: 0; }
.excel-error-item.active { opacity: 1; font-weight: 700; transform: translateX(4px); }

/* Helios Views */
.helios-mockup { background: var(--color-surface-elevated); border: 1px solid var(--color-hairline); border-radius: 8px; padding: 16px; box-shadow: 0 12px 24px rgba(0,0,0,0.2); }
.helios-dynamic-area { position: relative; min-height: 120px; margin-bottom: 16px; }
.helios-view { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity 0.3s ease, transform 0.3s ease; transform: translateY(5px); }
.helios-view.active { opacity: 1; pointer-events: auto; transform: translateY(0); }
.helios-badge { background: var(--color-surface); border: 1px solid var(--color-hairline); padding: 8px 10px; display: flex; align-items: center; gap: 8px; border-radius: 6px; font-size: 11px; color: var(--color-ash); opacity: 0.5; transition: var(--transition-fast); }
.helios-badge.active { opacity: 1; background: var(--color-accent-glow); border-color: var(--color-accent); color: var(--color-accent); transform: translateY(-2px); box-shadow: 0 4px 12px var(--color-accent-glow); }

/* ══════════════════════════════════════
   MASTER FLOW - Interactive Timeline
   ══════════════════════════════════════ */
.flow-track { position: relative; display: flex; align-items: center; justify-content: space-between; padding: 0 60px; margin-bottom: 40px; height: 80px; max-width: 800px; margin-left: auto; margin-right: auto; }
.flow-line { position: absolute; top: 50%; left: 80px; right: 80px; height: 3px; background: var(--color-hairline); z-index: 0; transform: translateY(-50%); border-radius: 2px; }
.flow-line-fill { position: absolute; top: 0; left: 0; height: 100%; background: linear-gradient(90deg, var(--color-green), var(--color-accent)); border-radius: 2px; transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.flow-node { position: relative; z-index: 2; width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; cursor: pointer; transition: var(--transition-base); border: 3px solid var(--color-hairline); background: var(--color-canvas); }
.flow-node.completed { border-color: var(--color-green); background: var(--color-canvas); box-shadow: 0 0 0 4px var(--color-canvas); }
.flow-node.active { border-color: var(--color-accent); background: var(--color-canvas); box-shadow: 0 0 20px var(--color-accent-glow), 0 0 0 4px var(--color-canvas); animation: nodePulse 2s ease-in-out infinite; }
.flow-node.pending { border-color: var(--color-hairline); background: var(--color-surface); opacity: 0.5; filter: grayscale(1); }
.flow-node-num { position: absolute; top: -10px; right: -10px; width: 22px; height: 22px; border-radius: 50%; background: var(--color-surface); color: #fff; font-size: 11px; font-weight: 700; display: grid; place-items: center; border: 2px solid var(--color-canvas); }
.flow-node-num.completed { background: var(--color-green); }
.flow-node-num.active { background: var(--color-accent); }
.flow-node-num.pending { background: var(--color-ash); }

/* Flow Detail Panel */
.flow-panels { position: relative; min-height: 300px; }
.flow-panel { display: none; background: #0c0d10; border: 1px solid var(--color-hairline); border-radius: 12px; overflow: hidden; box-shadow: 0 12px 24px rgba(0,0,0,0.3); }
.flow-panel.visible { display: grid; grid-template-columns: 1fr 1.5fr; animation: panelIn 0.4s ease forwards; }
.flow-panel-info { padding: 40px; border-right: 1px solid var(--color-hairline); display: flex; flex-direction: column; }
.flow-panel-visual { padding: 40px; background: #0c0d10; display: flex; justify-content: center; align-items: center; }

/* Flow Progress Footer */
.flow-progress { display: flex; align-items: center; justify-content: space-between; margin-top: 48px; padding: 20px 24px; background: var(--color-surface); border: 1px solid var(--color-hairline); border-radius: var(--radius-lg); }
.flow-progress-bar { flex: 1; margin: 0 24px; height: 6px; background: var(--color-surface-card); border-radius: 3px; overflow: hidden; }
.flow-progress-fill { height: 100%; background: linear-gradient(90deg, var(--color-green), var(--color-accent)); border-radius: 3px; transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1); }

/* ══════════════════════════════════════
   FIELD & BUDGET - Estaciones 4-5
   ══════════════════════════════════════ */
.field-item { background: var(--color-canvas); border: 1px solid var(--color-hairline); border-radius: 12px; padding: 24px; cursor: pointer; transition: var(--transition-base); }
.field-item:hover { transform: translateX(8px); border-color: var(--color-accent); }
.field-item.active { background: var(--color-surface-elevated); border-color: var(--color-accent); box-shadow: 0 12px 24px rgba(0,0,0,0.2); }

.field-visual-container { background: var(--color-canvas); border: 1px solid var(--color-hairline); border-radius: 16px; height: 440px; position: relative; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.field-view { position: absolute; inset: 0; padding: 40px; opacity: 0; pointer-events: none; transition: opacity 0.4s ease, transform 0.4s ease; transform: translateY(10px); display: flex; flex-direction: column; justify-content: center; align-items: center; }
.field-view.active { opacity: 1; pointer-events: auto; transform: translateY(0); }

@keyframes pulsePin {
    0% { box-shadow: 0 0 0 0 rgba(255, 95, 86, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(255, 95, 86, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 95, 86, 0); }
}

/* ── Technical Cards ── */
.tech-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.tech-card { background: var(--color-surface); border: 1px solid var(--color-hairline); border-radius: var(--radius-lg); padding: 32px; transition: var(--transition-base); position: relative; overflow: hidden; }
.tech-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--color-accent), transparent); opacity: 0; transition: opacity var(--transition-base); }
.tech-card:hover::before { opacity: 1; }
.tech-card:hover { border-color: var(--color-hairline-strong); transform: translateY(-2px); }
.tech-card-icon { width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center; margin-bottom: 20px; }
.code-block { padding: 14px 18px; background: rgba(255,255,255,0.03); border: 1px solid var(--color-hairline); border-radius: var(--radius-md); font-family: 'JetBrains Mono', monospace; font-size: 12px; line-height: 1.6; color: var(--color-accent); margin-top: 20px; overflow-x: auto; }

/* ── Closing Section ── */
.closing { background: var(--color-canvas); border-top: 1px solid rgba(255,107,53,0.3); position: relative; overflow: hidden; }
.closing::before { content:''; position:absolute; top:0; left:10%; right:10%; height:1px; background:linear-gradient(90deg, transparent, var(--color-accent), transparent); box-shadow: 0 0 30px var(--color-accent); }
.closing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; position: relative; z-index: 1; }
.closing-features { display: flex; flex-direction: column; gap: 32px; }
.closing-feature { display: flex; gap: 20px; }
.closing-num { width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, #ff3131, #ff6b35); color: white; font-weight: 800; font-size: 14px; display: grid; place-items: center; flex-shrink: 0; }

/* ── Footer ── */
.footer { padding: 64px 0; border-top: 1px solid var(--color-hairline); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; }

/* ── Animations ── */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes panelIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes nodePulse { 0%, 100% { box-shadow: 0 0 24px var(--color-accent-glow); } 50% { box-shadow: 0 0 40px var(--color-accent-glow), 0 0 60px rgba(255,107,53,0.08); } }
@keyframes radarSweep { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes progressAnimate { from { width: 0; } }

.anim-in { opacity: 0; transform: translateY(24px); transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1); }
.anim-in.visible { opacity: 1; transform: translateY(0); }
.anim-delay-1 { transition-delay: 0.1s; }
.anim-delay-2 { transition-delay: 0.2s; }
.anim-delay-3 { transition-delay: 0.3s; }
.anim-delay-4 { transition-delay: 0.4s; }

/* ── Responsive ── */
@media (max-width: 900px) {
    .comparison { grid-template-columns: 1fr; }
    .comparison-left { border-right: none; border-bottom: 1px solid var(--color-hairline); }
    .flow-panel.visible { grid-template-columns: 1fr; }
    .tech-grid { grid-template-columns: 1fr; }
    .closing-grid { grid-template-columns: 1fr; gap: 48px; }
    .flow-track { flex-wrap: wrap; gap: 16px; justify-content: center; }
    .flow-line { display: none; }
    .footer-inner { flex-direction: column; gap: 24px; text-align: center; }
    .section { padding: 80px 0; }
}