/* ============================================
   NAVETTA - GPTPA Design System
   Dark Theme + Glassmorphism + Animations
   Updated: 2026-01-04
   ============================================ */

/* ========================================
   CSS VARIABLES - 60/30/10 Color System
   ======================================== */
:root {
    --bg-primary: #0a0f1a;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --surface-glass: rgba(255, 255, 255, 0.08);
    --surface-glass-hover: rgba(255, 255, 255, 0.12);
    --border-glass: rgba(255, 255, 255, 0.15);
    --border-glass-hover: rgba(255, 255, 255, 0.25);
    --accent-primary: #818cf8;
    --accent-primary-bright: #a5b4fc;
    --accent-secondary: #10b981;
    --accent-warning: #fbbf24;
    --accent-danger: #f87171;
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-cta: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --text-dim: #6b7280;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 25px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 50px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.5);
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 64px;
    --space-3xl: 96px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========================================
   BASE STYLES
   ======================================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-secondary);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background:
        radial-gradient(ellipse 80% 80% at 20% 20%, rgba(99, 102, 241, 0.35) 0%, transparent 60%),
        radial-gradient(ellipse 70% 70% at 80% 80%, rgba(139, 92, 246, 0.25) 0%, transparent 60%),
        radial-gradient(ellipse 100% 100% at 50% 50%, rgba(16, 185, 129, 0.15) 0%, transparent 80%);
    pointer-events: none;
    z-index: -1;
    animation: backgroundPulse 8s ease-in-out infinite alternate;
}

@keyframes backgroundPulse {
    0% { opacity: 0.8; filter: blur(0px); }
    100% { opacity: 1; filter: blur(10px); }
}

a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
ul { list-style: none; }
img { max-width: 100%; height: auto; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--space-md); }

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 { color: var(--text-primary); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h1 { font-size: 3.5rem; font-weight: 800; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; font-weight: 600; }
h4 { font-size: 1.25rem; font-weight: 600; }
p { color: var(--text-secondary); }
.text-gradient { background: var(--gradient-hero); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.text-accent { color: var(--accent-primary-bright); }
.text-success { color: var(--accent-secondary); }
.highlight { color: var(--accent-secondary); font-weight: 600; }

/* ========================================
   GLASSMORPHISM CARDS
   ======================================== */
.glass-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.04) 100%);
    backdrop-filter: blur(25px) saturate(180%);
    -webkit-backdrop-filter: blur(25px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    transition: all var(--transition-base);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255,255,255,0.1);
}

.glass-card:hover {
    background: linear-gradient(135deg, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0.08) 100%);
    border-color: rgba(255, 255, 255, 0.35);
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), 0 0 40px rgba(99, 102, 241, 0.3);
}

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: var(--space-sm) 0;
    background: transparent;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: linear-gradient(180deg, rgba(10, 15, 26, 0.95) 0%, rgba(10, 15, 26, 0.85) 100%);
    backdrop-filter: blur(30px) saturate(200%);
    -webkit-backdrop-filter: blur(30px) saturate(200%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.nav-logo { display: flex; align-items: center; gap: var(--space-sm); }
.logo-img { height: 40px; opacity: 0.95; }
.logo-text { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); letter-spacing: -0.02em; }
.logo-text span { transition: color var(--transition-fast); }
.nav-logo:hover .logo-text span { color: var(--accent-primary-bright); }

.nav-menu { display: flex; align-items: center; gap: var(--space-lg); }

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 0; height: 2px;
    background: var(--gradient-cta);
    transition: width var(--transition-base);
}

.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }

.nav-link.nav-cta {
    background: var(--gradient-cta);
    color: white;
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    animation: ctaPulse 2s ease-in-out infinite;
}

.nav-link.nav-cta::after { display: none; }

.nav-link.nav-cta:hover {
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.6);
    animation: none;
}

@keyframes ctaPulse {
    0%, 100% { box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4); }
    50% { box-shadow: 0 4px 25px rgba(99, 102, 241, 0.6); }
}

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: var(--space-xs); }
.hamburger { display: block; width: 24px; height: 2px; background: var(--text-primary); position: relative; }
.hamburger::before, .hamburger::after { content: ''; position: absolute; width: 24px; height: 2px; background: var(--text-primary); left: 0; transition: transform var(--transition-fast); }
.hamburger::before { top: -8px; }
.hamburger::after { bottom: -8px; }

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--space-3xl) 0;
    overflow: hidden;
}

.hero-bg-container { position: absolute; top: 0; left: 0; right: 0; bottom: 0; z-index: -1; }
.hero-video { width: 100%; height: 100%; object-fit: cover; opacity: 0.3; filter: blur(2px); }
.hero-mask-layer, .hero-gradient-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; }
.hero-gradient-overlay {
    background:
        radial-gradient(ellipse at center, transparent 0%, var(--bg-primary) 70%),
        linear-gradient(180deg, transparent 60%, var(--bg-primary) 100%);
}

.hero-content { text-align: center; max-width: 900px; padding: 0 var(--space-md); position: relative; z-index: 1; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3) 0%, rgba(139, 92, 246, 0.2) 100%);
    border: 1px solid rgba(99, 102, 241, 0.5);
    border-radius: var(--radius-full);
    padding: 10px 24px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-primary-bright);
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.6s ease, badgeGlow 3s ease-in-out infinite;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

@keyframes badgeGlow {
    0%, 100% { box-shadow: 0 0 20px rgba(99, 102, 241, 0.4); }
    50% { box-shadow: 0 0 35px rgba(99, 102, 241, 0.7); }
}

.badge-dot {
    width: 10px; height: 10px;
    background: var(--accent-secondary);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
    box-shadow: 0 0 15px var(--accent-secondary);
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 10px var(--accent-secondary); }
    50% { opacity: 0.7; transform: scale(1.3); box-shadow: 0 0 25px var(--accent-secondary); }
}

.hero-title { margin-bottom: var(--space-lg); animation: fadeInUp 0.6s ease 0.1s backwards; }
.title-line { display: block; font-size: 3.5rem; font-weight: 800; letter-spacing: -0.03em; }
.title-accent { background: var(--gradient-hero); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle { font-size: 1.25rem; color: var(--text-muted); max-width: 600px; margin: 0 auto var(--space-xl); animation: fadeInUp 0.6s ease 0.2s backwards; }
.typed-text { color: var(--accent-secondary); font-weight: 600; }

.hero-cta { display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; margin-bottom: var(--space-xl); animation: fadeInUp 0.6s ease 0.3s backwards; }

.btn { display: inline-flex; align-items: center; gap: var(--space-xs); padding: 14px 32px; border-radius: var(--radius-full); font-size: 1rem; font-weight: 600; transition: all var(--transition-base); cursor: pointer; border: none; }
.btn-primary { background: var(--gradient-cta); color: white; box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5); }
.btn-primary:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 8px 40px rgba(99, 102, 241, 0.6); }
.btn-arrow { width: 20px; height: 20px; transition: transform var(--transition-fast); }
.btn-primary:hover .btn-arrow { transform: translateX(4px); }
.btn-secondary { background: var(--surface-glass); backdrop-filter: blur(20px); border: 1px solid var(--border-glass); color: var(--text-primary); }
.btn-secondary:hover { background: var(--surface-glass-hover); border-color: var(--border-glass-hover); transform: translateY(-3px); }

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    animation: fadeInUp 0.6s ease 0.4s backwards;
}

.stat-item { text-align: center; }
.stat-prefix, .stat-number, .stat-suffix { font-size: 2rem; font-weight: 800; color: var(--text-primary); }
.stat-number { background: var(--gradient-hero); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { display: block; font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }
.stat-divider { width: 1px; height: 50px; background: var(--border-glass); }

.scroll-indicator { position: absolute; bottom: var(--space-xl); left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: var(--space-xs); color: var(--text-dim); animation: fadeInUp 0.6s ease 0.5s backwards; }
.scroll-text { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 2px; }
.scroll-line { width: 1px; height: 40px; background: linear-gradient(180deg, var(--text-dim) 0%, transparent 100%); animation: scrollBounce 2s ease-in-out infinite; }

@keyframes scrollBounce { 0%, 100% { transform: scaleY(1); opacity: 1; } 50% { transform: scaleY(0.5); opacity: 0.5; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

/* ========================================
   SECTIONS
   ======================================== */
.section { padding: var(--space-3xl) 0; position: relative; }
.section-header { margin-bottom: var(--space-2xl); }
.section-header.center { text-align: center; }
.section-tag { display: inline-block; font-size: 0.85rem; font-weight: 600; color: var(--accent-primary-bright); margin-bottom: var(--space-sm); letter-spacing: 1px; }
.section-title { margin-bottom: var(--space-md); }
.section-subtitle, .section-text { font-size: 1.1rem; color: var(--text-muted); max-width: 600px; }
.section-header.center .section-subtitle { margin: 0 auto; }

/* ========================================
   SERVICES GRID
   ======================================== */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-lg); }

.service-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: var(--gradient-cta); opacity: 0; transition: opacity var(--transition-base); }
.service-card:hover { transform: translateY(-8px); border-color: var(--border-glass-hover); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(99, 102, 241, 0.2); }
.service-card:hover::before { opacity: 1; }

.service-icon { width: 56px; height: 56px; background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.1) 100%); border: 1px solid rgba(99, 102, 241, 0.3); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; margin-bottom: var(--space-md); }
.service-icon svg { width: 28px; height: 28px; stroke: var(--accent-primary-bright); }
.service-title { font-size: 1.25rem; margin-bottom: var(--space-sm); color: var(--text-primary); }
.service-desc { font-size: 0.95rem; color: var(--text-muted); margin-bottom: var(--space-md); }
.service-tag { display: inline-block; font-size: 0.75rem; font-weight: 600; color: var(--accent-secondary); background: rgba(16, 185, 129, 0.15); padding: 6px 12px; border-radius: var(--radius-full); }

/* ========================================
   PROBLEM SECTION
   ======================================== */
.problem { background: var(--bg-secondary); }
.problem-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: var(--space-lg); margin-bottom: var(--space-2xl); }

.problem-stat { background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%); border: 1px solid var(--border-glass); border-radius: var(--radius-lg); padding: var(--space-lg); text-align: center; transition: all var(--transition-base); }
.problem-stat:hover { transform: translateY(-4px); border-color: var(--accent-warning); box-shadow: 0 0 30px rgba(251, 191, 36, 0.2); }
.problem-number { font-size: 3rem; font-weight: 800; color: var(--accent-warning); display: block; }
.problem-unit { font-size: 1.5rem; font-weight: 600; color: var(--accent-warning); }
.problem-label { display: block; font-size: 0.95rem; color: var(--text-secondary); margin-top: var(--space-xs); }
.problem-source { display: block; font-size: 0.75rem; color: var(--text-dim); margin-top: var(--space-xs); }
.problem-visual { text-align: center; margin-bottom: var(--space-xl); }
.problem-cards-img { max-width: 400px; border-radius: var(--radius-lg); }
.problem-message { text-align: center; max-width: 700px; margin: 0 auto; }
.problem-text { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: var(--space-md); }
.problem-cta { font-size: 1.25rem; color: var(--text-primary); }

/* ========================================
   SOLUTIONS TABS
   ======================================== */
.solutions-tabs { background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.02) 100%); border: 1px solid var(--border-glass); border-radius: var(--radius-xl); overflow: hidden; }
.tabs-nav { display: flex; border-bottom: 1px solid var(--border-glass); }

.tab-btn { flex: 1; padding: var(--space-md) var(--space-lg); background: transparent; border: none; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: var(--space-xs); transition: all var(--transition-base); position: relative; }
.tab-btn::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 3px; background: var(--gradient-cta); transform: scaleX(0); transition: transform var(--transition-base); }
.tab-btn:hover { background: var(--surface-glass); }
.tab-btn.active { background: var(--surface-glass); }
.tab-btn.active::after { transform: scaleX(1); }
.tab-number { font-size: 0.75rem; font-weight: 600; color: var(--text-dim); }
.tab-btn.active .tab-number { color: var(--accent-primary-bright); }
.tab-name { font-size: 1rem; font-weight: 600; color: var(--text-muted); }
.tab-btn.active .tab-name { color: var(--text-primary); }

.tabs-content { padding: var(--space-xl); }
.tab-panel { display: none; grid-template-columns: 1fr 1fr; gap: var(--space-xl); align-items: center; }
.tab-panel.active { display: grid; }
.tab-visual { position: relative; }
.tab-visual-mockup { display: flex; align-items: flex-end; gap: var(--space-md); }
.mockup-laptop { max-width: 80%; border-radius: var(--radius-lg); }
.mockup-mobile { max-width: 25%; border-radius: var(--radius-md); position: absolute; bottom: -20px; right: 0; }
.visual-icon { width: 120px; height: 120px; background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.1) 100%); border: 1px solid rgba(99, 102, 241, 0.3); border-radius: var(--radius-xl); display: flex; align-items: center; justify-content: center; margin: 0 auto; }
.visual-icon svg { width: 60px; height: 60px; stroke: var(--accent-primary-bright); }
.tab-info h3 { font-size: 1.5rem; margin-bottom: var(--space-md); color: var(--text-primary); }
.tab-desc { color: var(--text-muted); margin-bottom: var(--space-md); }
.tab-features { margin-bottom: var(--space-md); }
.tab-features li { padding: var(--space-xs) 0; color: var(--text-secondary); position: relative; padding-left: var(--space-lg); }
.tab-features li::before { content: '✓'; position: absolute; left: 0; color: var(--accent-secondary); font-weight: 600; }
.tab-status { display: inline-block; font-size: 0.85rem; font-weight: 600; color: var(--accent-secondary); background: rgba(16, 185, 129, 0.15); padding: 8px 16px; border-radius: var(--radius-full); }

/* ========================================
   ON-PREMISE SECTION
   ======================================== */
.onpremise { background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(16, 185, 129, 0.05) 100%); }
.onpremise-wrapper { display: grid; grid-template-columns: 1.5fr 1fr; gap: var(--space-2xl); align-items: start; }
.deployment-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); margin-top: var(--space-xl); }

.deploy-option { background: var(--surface-glass); border: 1px solid var(--border-glass); border-radius: var(--radius-lg); padding: var(--space-md); text-align: center; transition: all var(--transition-base); }
.deploy-option:hover { transform: translateY(-4px); border-color: var(--accent-primary); box-shadow: 0 0 30px rgba(99, 102, 241, 0.2); }
.deploy-icon { width: 48px; height: 48px; background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.1) 100%); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; margin: 0 auto var(--space-sm); }
.deploy-icon svg { width: 24px; height: 24px; stroke: var(--accent-primary-bright); }
.deploy-option h4 { font-size: 1rem; margin-bottom: var(--space-xs); color: var(--text-primary); }
.deploy-option p { font-size: 0.85rem; color: var(--text-muted); }

.onpremise-benefits { display: flex; flex-direction: column; gap: var(--space-md); }
.benefit-item { display: flex; align-items: flex-start; gap: var(--space-md); background: var(--surface-glass); border: 1px solid var(--border-glass); border-radius: var(--radius-lg); padding: var(--space-md); transition: all var(--transition-base); }
.benefit-item:hover { border-color: var(--accent-secondary); box-shadow: 0 0 20px rgba(16, 185, 129, 0.2); }
.benefit-icon { font-size: 1.25rem; font-weight: 800; color: var(--accent-secondary); min-width: 40px; }
.benefit-text h4 { font-size: 1rem; color: var(--text-primary); margin-bottom: 4px; }
.benefit-text p { font-size: 0.85rem; color: var(--text-muted); }

/* ========================================
   INTEGRATIONS
   ======================================== */
.integration-flow-vertical { display: flex; flex-direction: column; align-items: center; gap: var(--space-md); margin-bottom: var(--space-xl); }
.flow-step-v { background: var(--surface-glass); border: 1px solid var(--border-glass); border-radius: var(--radius-lg); padding: var(--space-lg); text-align: center; width: 100%; max-width: 600px; }
.flow-step-v.highlight { background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.1) 100%); border-color: var(--accent-primary); box-shadow: 0 0 30px rgba(99, 102, 241, 0.3); }
.flow-step-v h4 { color: var(--text-primary); margin-bottom: var(--space-sm); }
.flow-step-v p { color: var(--text-muted); }
.integration-logos-v { display: flex; flex-wrap: wrap; gap: var(--space-sm); justify-content: center; margin-top: var(--space-sm); }
.int-logo, .srv-logo { background: var(--bg-tertiary); border: 1px solid var(--border-glass); border-radius: var(--radius-md); padding: 8px 16px; font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); }
.flow-arrow-down { color: var(--accent-primary); }
.flow-arrow-down svg { width: 32px; height: 32px; }
.integration-services-v { text-align: center; padding: var(--space-lg); background: var(--surface-glass); border: 1px solid var(--border-glass); border-radius: var(--radius-lg); }
.integration-services-v h4 { color: var(--text-primary); margin-bottom: var(--space-md); }
.service-logos-v { display: flex; flex-wrap: wrap; gap: var(--space-sm); justify-content: center; }

/* ========================================
   EXCEL DATA SECTION
   ======================================== */
.excel-data { background: var(--bg-secondary); }
.excel-icon-wrapper { text-align: center; margin-bottom: var(--space-xl); }
.excel-icon { width: 80px; height: auto; object-fit: contain; }
.excel-opener { text-align: center; max-width: 700px; margin: 0 auto var(--space-2xl); font-size: 1.1rem; color: var(--text-secondary); }
.opener-solution { margin-top: var(--space-md); color: var(--text-primary); }
.excel-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-lg); }
.excel-step { background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%); border: 1px solid var(--border-glass); border-radius: var(--radius-xl); padding: var(--space-lg); transition: all var(--transition-base); }
.excel-step:hover { transform: translateY(-4px); border-color: var(--accent-secondary); box-shadow: 0 0 30px rgba(16, 185, 129, 0.2); }
.step-number { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; background: var(--gradient-success); border-radius: 50%; font-size: 1.25rem; font-weight: 800; color: white; margin-bottom: var(--space-md); }
.excel-step h4 { font-size: 1.1rem; color: var(--text-primary); margin-bottom: var(--space-sm); }
.excel-step p { font-size: 0.95rem; color: var(--text-muted); }

/* Excel Versions Section */
.excel-versions {
    background: linear-gradient(135deg, rgba(248, 113, 113, 0.1) 0%, rgba(239, 68, 68, 0.05) 100%);
    border: 1px solid rgba(248, 113, 113, 0.3);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    margin-top: var(--space-2xl);
    text-align: center;
}
.excel-versions h4 {
    font-size: 1.25rem;
    color: var(--accent-danger);
    margin-bottom: var(--space-lg);
}
.version-mess {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    align-items: center;
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
}
.version-mess code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    text-decoration: line-through;
    opacity: 0.7;
}
.version-mess code:last-child {
    text-decoration: none;
    opacity: 1;
    color: var(--accent-danger);
    background: rgba(248, 113, 113, 0.15);
}
.version-solution {
    font-size: 1.1rem;
    color: var(--text-primary);
    padding: var(--space-md);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.1) 100%);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-md);
}
.version-solution strong {
    color: var(--accent-secondary);
}

/* ChatGPT Comparison */
.excel-chatgpt {
    margin-top: var(--space-2xl);
}
.excel-chatgpt h4 {
    font-size: 1.25rem;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--space-lg);
}
.chatgpt-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}
.chatgpt-bad {
    background: linear-gradient(135deg, rgba(248, 113, 113, 0.15) 0%, rgba(239, 68, 68, 0.08) 100%);
    border: 1px solid rgba(248, 113, 113, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}
.chatgpt-bad p strong {
    color: var(--accent-danger);
}
.chatgpt-good {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(16, 185, 129, 0.08) 100%);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}
.chatgpt-good p strong {
    color: var(--accent-secondary);
}
.chatgpt-bad ul, .chatgpt-good ul {
    margin-top: var(--space-md);
}
.chatgpt-bad li, .chatgpt-good li {
    padding: var(--space-xs) 0;
    padding-left: var(--space-md);
    position: relative;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.chatgpt-bad li::before {
    content: '✕';
    position: absolute;
    left: 0;
    color: var(--accent-danger);
    font-weight: 600;
}
.chatgpt-good li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-secondary);
    font-weight: 600;
}

@media (max-width: 768px) {
    .chatgpt-comparison { grid-template-columns: 1fr; }
}

/* ========================================
   TECHNOLOGY & ABOUT
   ======================================== */
.tech-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: var(--space-lg); }
.tech-item { background: var(--surface-glass); border: 1px solid var(--border-glass); border-radius: var(--radius-lg); padding: var(--space-lg); text-align: center; transition: all var(--transition-base); }
.tech-item:hover { transform: translateY(-4px); border-color: var(--border-glass-hover); box-shadow: var(--shadow-md); }
.tech-item img { height: 40px; margin-bottom: var(--space-sm); opacity: 0.8; }
.tech-item:hover img { opacity: 1; }
.tech-item span { display: block; font-size: 0.85rem; color: var(--text-muted); }

.about-content { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2xl); align-items: center; }
.about-text p { margin-bottom: var(--space-md); }
.about-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }
.about-stat { background: var(--surface-glass); border: 1px solid var(--border-glass); border-radius: var(--radius-lg); padding: var(--space-md); text-align: center; }
.about-stat-number { font-size: 2rem; font-weight: 800; background: var(--gradient-hero); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.about-stat-label { font-size: 0.85rem; color: var(--text-muted); }

/* About Evolution - Timeline Image */
.about-evolution {
    display: flex;
    align-items: center;
    justify-content: center;
}

.evolution-timeline {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.evolution-timeline:hover {
    transform: scale(1.02);
    filter: brightness(1.1);
}

/* ========================================
   ROI TABLE WITH ICONS
   ======================================== */
.roi { background: var(--bg-secondary); }

.roi-table-new {
    max-width: 900px;
    margin: 0 auto;
}

.roi-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--surface-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    margin-bottom: 2px;
}

.roi-col {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.roi-card {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-md);
    align-items: center;
    padding: var(--space-lg);
    background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);
    border: 1px solid var(--border-glass);
    border-top: none;
    transition: all var(--transition-base);
}

.roi-card:last-child {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.roi-card:hover {
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.04) 100%);
    border-color: var(--accent-primary);
}

.roi-activity {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.roi-activity span {
    font-weight: 500;
    color: var(--text-primary);
}

.roi-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.roi-icon svg {
    width: 22px;
    height: 22px;
}

.roi-icon.search {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(99, 102, 241, 0.1) 100%);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--accent-primary-bright);
}

.roi-icon.tag {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.1) 100%);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--accent-secondary);
}

.roi-icon.doc {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.2) 0%, rgba(251, 191, 36, 0.1) 100%);
    border: 1px solid rgba(251, 191, 36, 0.3);
    color: var(--accent-warning);
}

.roi-icon.edit {
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.2) 0%, rgba(236, 72, 153, 0.1) 100%);
    border: 1px solid rgba(236, 72, 153, 0.3);
    color: #f472b6;
}

.roi-before {
    font-size: 1rem;
    color: var(--text-muted);
    text-decoration: line-through;
    opacity: 0.7;
}

.roi-after {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-secondary);
}

.roi-perf {
    text-align: center;
}

.perf-badge {
    display: inline-block;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.1) 100%);
    border: 1px solid rgba(16, 185, 129, 0.4);
    border-radius: var(--radius-full);
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--accent-secondary);
}

.perf-badge.infinity {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.3) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-color: rgba(139, 92, 246, 0.5);
    color: #a78bfa;
    font-size: 1.5rem;
}

.perf-badge.super {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.3) 0%, rgba(251, 191, 36, 0.1) 100%);
    border-color: rgba(251, 191, 36, 0.5);
    color: var(--accent-warning);
}

@media (max-width: 768px) {
    .roi-header { display: none; }

    .roi-card {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
        text-align: center;
        border-radius: var(--radius-lg);
        margin-bottom: var(--space-sm);
        border: 1px solid var(--border-glass);
    }

    .roi-activity {
        flex-direction: column;
        margin-bottom: var(--space-sm);
    }

    .roi-before::before { content: 'Prima: '; font-weight: 600; color: var(--text-dim); }
    .roi-after::before { content: 'Dopo: '; font-weight: 600; color: var(--text-dim); }
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact { background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.1) 100%); }
.contact-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2xl); }
.contact-info h3 { margin-bottom: var(--space-md); }
.contact-info p { margin-bottom: var(--space-lg); }
.contact-details { display: flex; flex-direction: column; gap: var(--space-md); }
.contact-item { display: flex; align-items: center; gap: var(--space-md); color: var(--text-secondary); }
.contact-item svg { width: 24px; height: 24px; stroke: var(--accent-primary-bright); }
.contact-form { background: var(--surface-glass); border: 1px solid var(--border-glass); border-radius: var(--radius-xl); padding: var(--space-xl); }
.form-group { margin-bottom: var(--space-md); }
.form-group label { display: block; font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); margin-bottom: var(--space-xs); }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: var(--space-sm); background: var(--bg-tertiary); border: 1px solid var(--border-glass); border-radius: var(--radius-md); color: var(--text-primary); font-family: inherit; font-size: 1rem; transition: border-color var(--transition-fast); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--accent-primary); box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2); }
.form-group textarea { min-height: 120px; resize: vertical; }
.btn-submit { width: 100%; padding: var(--space-md); background: var(--gradient-cta); border: none; border-radius: var(--radius-full); color: white; font-size: 1rem; font-weight: 600; cursor: pointer; transition: all var(--transition-base); }
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5); }

/* ========================================
   FOOTER
   ======================================== */
.footer { background: var(--bg-secondary); padding: var(--space-2xl) 0 var(--space-lg); border-top: 1px solid var(--border-glass); }
.footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-xl); margin-bottom: var(--space-xl); }
.footer-brand p { color: var(--text-muted); margin-top: var(--space-sm); max-width: 300px; }
.footer-links h4 { color: var(--text-primary); margin-bottom: var(--space-md); font-size: 1rem; }
.footer-links ul { display: flex; flex-direction: column; gap: var(--space-sm); }
.footer-links a { color: var(--text-muted); font-size: 0.9rem; }
.footer-links a:hover { color: var(--accent-primary-bright); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: var(--space-lg); border-top: 1px solid var(--border-glass); }
.footer-bottom p { font-size: 0.85rem; color: var(--text-dim); }
.footer-social { display: flex; gap: var(--space-md); }
.footer-social a { color: var(--text-muted); }
.footer-social a:hover { color: var(--accent-primary-bright); }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .onpremise-wrapper { grid-template-columns: 1fr; }
    .deployment-options { grid-template-columns: 1fr; }
    .tab-panel.active { grid-template-columns: 1fr; }
    .contact-wrapper { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    h1, .title-line { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    .nav-menu { position: fixed; top: 70px; left: 0; right: 0; background: rgba(10, 15, 26, 0.98); backdrop-filter: blur(20px); flex-direction: column; padding: var(--space-lg); gap: var(--space-md); transform: translateY(-100%); opacity: 0; visibility: hidden; transition: all var(--transition-base); }
    .nav-menu.active { transform: translateY(0); opacity: 1; visibility: visible; }
    .nav-toggle { display: block; }
    .hero-stats { flex-direction: column; gap: var(--space-md); }
    .stat-divider { width: 50px; height: 1px; }
    .tabs-nav { flex-direction: column; }
    .about-content { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: var(--space-md); text-align: center; }
}

@media (max-width: 480px) {
    h1, .title-line { font-size: 2rem; }
    .hero-cta { flex-direction: column; }
    .btn { width: 100%; justify-content: center; }
}