/**
 * AIGRID Ventures — Main Stylesheet
 *
 * Structure:
 *  1. CSS Custom Properties (Design Tokens)
 *  2. CSS Reset & Base
 *  3. Typography
 *  4. Layout Utilities
 *  5. Components
 *     5.1  Header & Navigation
 *     5.2  Hero
 *     5.3  Section Shared
 *     5.4  About
 *     5.5  Services / Cards
 *     5.6  Solutions
 *     5.7  Process Timeline
 *     5.8  Partners
 *     5.9  Investment
 *     5.10 Contact
 *     5.11 Footer
 *  6. Animations
 *  7. Media Queries
 */

/* ============================================================
   1. CSS Custom Properties
   ============================================================ */
:root {
  /* Brand Colors */
  --color-bg:           #050a14;
  --color-bg-secondary: #0a1628;
  --color-surface:      #0d1f3c;
  --color-surface-alt:  #112240;
  --color-border:       rgba(0, 163, 255, 0.15);

  --color-primary:      #00a3ff;
  --color-primary-dark: #0077cc;
  --color-accent:       #00e5ff;
  --color-accent-2:     #7b2fff;

  --color-text:         #e8edf5;
  --color-text-muted:   #8899aa;
  --color-text-subtle:  #556677;

  /* Gradients */
  --gradient-hero:      linear-gradient(135deg, #050a14 0%, #0a1628 50%, #0d1f3c 100%);
  --gradient-primary:   linear-gradient(135deg, #00a3ff 0%, #00e5ff 100%);
  --gradient-glow:      radial-gradient(ellipse at center, rgba(0, 163, 255, 0.12) 0%, transparent 70%);

  /* Typography */
  --font-sans:    'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  --text-xs:   0.75rem;    /* 12px */
  --text-sm:   0.875rem;   /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg:   1.125rem;   /* 18px */
  --text-xl:   1.25rem;    /* 20px */
  --text-2xl:  1.5rem;     /* 24px */
  --text-3xl:  1.875rem;   /* 30px */
  --text-4xl:  2.25rem;    /* 36px */
  --text-5xl:  3rem;       /* 48px */
  --text-6xl:  3.75rem;    /* 60px */
  --text-7xl:  4.5rem;     /* 72px */

  --font-weight-normal:    400;
  --font-weight-medium:    500;
  --font-weight-semibold:  600;
  --font-weight-bold:      700;
  --font-weight-extrabold: 800;

  --leading-tight:  1.25;
  --leading-snug:   1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* Spacing (8px base) */
  --space-1:  0.25rem;   /* 4px  */
  --space-2:  0.5rem;    /* 8px  */
  --space-3:  0.75rem;   /* 12px */
  --space-4:  1rem;      /* 16px */
  --space-5:  1.25rem;   /* 20px */
  --space-6:  1.5rem;    /* 24px */
  --space-8:  2rem;      /* 32px */
  --space-10: 2.5rem;    /* 40px */
  --space-12: 3rem;      /* 48px */
  --space-16: 4rem;      /* 64px */
  --space-20: 5rem;      /* 80px */
  --space-24: 6rem;      /* 96px */

  /* Layout */
  --container-max: 1280px;
  --container-xl:  1440px;
  --nav-height:    72px;

  /* Borders & Radii */
  --radius-sm:   0.375rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-2xl:  1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:    0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md:    0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg:    0 8px 32px rgba(0, 0, 0, 0.6);
  --shadow-glow:  0 0 40px rgba(0, 163, 255, 0.2);
  --shadow-card:  0 2px 20px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.04);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-spring: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);
}


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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}

input,
textarea {
  font-family: inherit;
}


/* ============================================================
   3. Typography
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

.display-1 {
  font-size: clamp(var(--text-5xl), 7vw, var(--text-7xl));
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.display-2 {
  font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl));
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.heading-1 { font-size: var(--text-5xl); }
.heading-2 { font-size: var(--text-4xl); }
.heading-3 { font-size: var(--text-3xl); }
.heading-4 { font-size: var(--text-2xl); }

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

.text-muted  { color: var(--color-text-muted); }
.text-subtle { color: var(--color-text-subtle); }
.text-primary { color: var(--color-primary); }

.label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}


/* ============================================================
   4. Layout Utilities
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section {
  padding-block: var(--space-24);
}

.section--dark {
  background-color: var(--color-bg-secondary);
}

.section--surface {
  background-color: var(--color-surface);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-header .label {
  display: inline-block;
  margin-bottom: var(--space-3);
}

.section-header h2 {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.section-header p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-inline: auto;
  line-height: var(--leading-relaxed);
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }


/* ============================================================
   5.1 Header & Navigation
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background-color var(--transition-slow), box-shadow var(--transition-slow);
}

.site-header.scrolled {
  background-color: rgba(5, 10, 20, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--color-border), var(--shadow-md);
}

.nav {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.nav__logo-mark {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-extrabold);
  font-size: var(--text-sm);
  color: var(--color-bg);
  letter-spacing: -0.02em;
}

.nav__logo-text {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.01em;
}

.nav__logo-text span {
  color: var(--color-primary);
}

/* Nav Links */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
  justify-content: center;
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text);
  background-color: rgba(255, 255, 255, 0.06);
}

/* Nav Actions */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Mobile Menu Toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.nav__toggle:hover {
  background-color: rgba(255, 255, 255, 0.06);
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.open span:nth-child(2) { opacity: 0; }
.nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
.nav__mobile {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background-color: rgba(5, 10, 20, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-6) var(--space-6);
}

.nav__mobile.open {
  display: block;
}

.nav__mobile-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-5);
}

.nav__mobile-link {
  font-size: var(--text-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav__mobile-link:hover {
  color: var(--color-text);
  background-color: rgba(255, 255, 255, 0.06);
}


/* ============================================================
   5.2 Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
}

.btn--primary {
  background: var(--gradient-primary);
  color: var(--color-bg);
  box-shadow: 0 0 20px rgba(0, 163, 255, 0.3);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 24px rgba(0, 163, 255, 0.45);
}

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

.btn--secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: rgba(0, 163, 255, 0.05);
}

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

.btn--ghost:hover {
  color: var(--color-text);
  background-color: rgba(255, 255, 255, 0.06);
}

.btn--lg {
  padding: 0.875rem var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}


/* ============================================================
   5.3 Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--gradient-hero);
  padding-top: var(--nav-height);
}

/* Animated grid background */
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 163, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 163, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

/* Glowing orbs */
.hero__orb {
  position: absolute;
  border-radius: var(--radius-full);
  filter: blur(120px);
  pointer-events: none;
}

.hero__orb--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 163, 255, 0.18) 0%, transparent 70%);
  top: -200px;
  left: -100px;
  animation: orbFloat1 12s ease-in-out infinite alternate;
}

.hero__orb--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(123, 47, 255, 0.12) 0%, transparent 70%);
  top: 30%;
  right: -150px;
  animation: orbFloat2 15s ease-in-out infinite alternate;
}

.hero__orb--3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.10) 0%, transparent 70%);
  bottom: -100px;
  left: 40%;
  animation: orbFloat3 10s ease-in-out infinite alternate;
}

.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
  padding-block: var(--space-16);
  text-align: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background-color: rgba(0, 163, 255, 0.08);
  border: 1px solid rgba(0, 163, 255, 0.2);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-8);
  animation: fadeInUp 0.6s ease both;
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  animation: pulse 2s ease infinite;
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.6s 0.1s ease both;
}

.hero__subtitle {
  font-size: clamp(var(--text-lg), 2vw, var(--text-2xl));
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: var(--leading-relaxed);
  animation: fadeInUp 0.6s 0.2s ease both;
}

.hero__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-16);
  animation: fadeInUp 0.6s 0.3s ease both;
}

.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-12);
  flex-wrap: wrap;
  animation: fadeInUp 0.6s 0.4s ease both;
}

.hero__stat {
  text-align: center;
}

.hero__stat-value {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-extrabold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--space-1);
}

.hero__stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

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

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-subtle);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  animation: fadeIn 1s 1s ease both;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  animation: scrollLine 2s ease infinite;
}


/* ============================================================
   5.4 About
   ============================================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about__label { margin-bottom: var(--space-3); }

.about__title {
  font-size: clamp(var(--text-3xl), 3.5vw, var(--text-5xl));
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
}

.about__desc {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
}

.about__values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.about__value {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
}

.about__value-icon {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  flex-shrink: 0;
}

/* About visual card */
.about__visual {
  position: relative;
}

.about__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.about__card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.about__card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0, 163, 255, 0.15), rgba(0, 229, 255, 0.08));
  border: 1px solid rgba(0, 163, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.about__card-title {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
}

.about__card-subtitle {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.about__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.about__metric {
  text-align: center;
  padding: var(--space-5) var(--space-4);
  background: rgba(0, 163, 255, 0.04);
  border: 1px solid rgba(0, 163, 255, 0.08);
  border-radius: var(--radius-lg);
}

.about__metric-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-extrabold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-1);
}

.about__metric-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.3;
}

.about__expertise {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.about__tag {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  background: rgba(0, 163, 255, 0.08);
  border: 1px solid rgba(0, 163, 255, 0.15);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
}


/* ============================================================
   5.5 Services / Cards
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.service-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top left, rgba(0, 163, 255, 0.06) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  border-color: rgba(0, 163, 255, 0.35);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0, 163, 255, 0.15), rgba(0, 229, 255, 0.06));
  border: 1px solid rgba(0, 163, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-6);
  transition: transform var(--transition-spring);
}

.service-card:hover .service-card__icon {
  transform: scale(1.1) rotate(-3deg);
}

.service-card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-3);
  line-height: var(--leading-snug);
}

.service-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.service-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.service-card__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.service-card__item::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  flex-shrink: 0;
}


/* ============================================================
   5.6 Solutions
   ============================================================ */
.solutions {
  background: var(--color-bg-secondary);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.solution-card {
  position: relative;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  overflow: hidden;
  cursor: default;
}

.solution-card:hover {
  border-color: rgba(0, 163, 255, 0.3);
  background: var(--color-surface-alt);
  transform: translateY(-2px);
}

.solution-card__icon {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
  display: block;
}

.solution-card__title {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.solution-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}


/* ============================================================
   5.7 Process Timeline
   ============================================================ */
.process {
  background: var(--color-bg);
}

.process-timeline {
  display: flex;
  gap: 0;
  position: relative;
  overflow-x: auto;
  padding-bottom: var(--space-4);
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border) 15%, var(--color-border) 85%, transparent);
}

.process-step {
  flex: 1;
  min-width: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 var(--space-4);
  position: relative;
}

.process-step__number {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
  z-index: 1;
  position: relative;
  transition: all var(--transition-base);
}

.process-step:hover .process-step__number {
  background: var(--gradient-primary);
  color: var(--color-bg);
  border-color: transparent;
  transform: scale(1.1);
  box-shadow: 0 0 20px rgba(0, 163, 255, 0.4);
}

.process-step__label {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

.process-step__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.process-step__arrow {
  position: absolute;
  top: 20px;
  right: -10px;
  color: var(--color-primary);
  font-size: var(--text-xs);
  z-index: 2;
}

.process-step:last-child .process-step__arrow {
  display: none;
}


/* ============================================================
   5.8 Partners
   ============================================================ */
.partners {
  background: var(--color-bg-secondary);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-4);
  align-items: center;
}

.partner-card {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-subtle);
  letter-spacing: 0.04em;
  transition: all var(--transition-base);
  min-height: 72px;
}

.partner-card:hover {
  color: var(--color-text);
  border-color: rgba(0, 163, 255, 0.25);
  background: var(--color-surface-alt);
}


/* ============================================================
   5.9 Investment / CTA
   ============================================================ */
.investment {
  position: relative;
  overflow: hidden;
  background: var(--color-bg);
}

.investment__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 50%, rgba(0, 163, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.investment__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin-inline: auto;
}

.investment__title {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
}

.investment__desc {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-10);
  line-height: var(--leading-relaxed);
}

.investment__models {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-bottom: var(--space-10);
}

.investment__model-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(0, 163, 255, 0.06);
  border: 1px solid rgba(0, 163, 255, 0.15);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.investment__model-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
}

.investment__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}


/* ============================================================
   5.10 Contact
   ============================================================ */
.contact {
  background: var(--color-bg-secondary);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.contact__info-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.contact__info-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

.contact__channels {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact__channel {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base);
}

.contact__channel:hover {
  border-color: rgba(0, 163, 255, 0.3);
}

.contact__channel-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 163, 255, 0.08);
  border-radius: var(--radius-md);
}

.contact__channel-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.contact__channel-value {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
}

/* Form */
.contact__form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 163, 255, 0.12);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-subtle);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select option {
  background: var(--color-surface);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}


/* ============================================================
   5.11 Footer
   ============================================================ */
.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-16);
}

.footer__main {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-border);
}

.footer__brand {
  max-width: 280px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer__logo-mark {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-extrabold);
  font-size: var(--text-sm);
  color: var(--color-bg);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.footer__col-title {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  padding: var(--space-1) 0;
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__legal {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
}

.footer__legal a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__legal a:hover {
  color: var(--color-primary);
}

.footer__legal-links {
  display: flex;
  gap: var(--space-5);
}


/* ============================================================
   6. Animations
   ============================================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}

@keyframes orbFloat1 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(60px, 40px) scale(1.1); }
}

@keyframes orbFloat2 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(-40px, 60px) scale(0.9); }
}

@keyframes orbFloat3 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(30px, -30px) scale(1.05); }
}

@keyframes scrollLine {
  0%   { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50%  { opacity: 1; transform: scaleY(1); transform-origin: top; }
  100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

/* Scroll-reveal */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }


/* ============================================================
   7. Media Queries
   ============================================================ */

/* Large screens */
@media (min-width: 1280px) {
  .container { padding-inline: var(--space-8); }
}

/* Medium screens (tablets) */
@media (max-width: 1024px) {
  .about__grid     { grid-template-columns: 1fr; }
  .about__visual   { max-width: 560px; margin-inline: auto; }
  .services-grid   { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid  { grid-template-columns: repeat(2, 1fr); }
  .partners-grid   { grid-template-columns: repeat(4, 1fr); }
  .footer__main    { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .contact__grid   { grid-template-columns: 1fr; }
}

/* Small screens (mobile) */
@media (max-width: 768px) {
  :root { --nav-height: 64px; }

  .nav__links,
  .nav__actions { display: none; }

  .nav__toggle { display: flex; }

  .services-grid  { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-grid  { grid-template-columns: repeat(3, 1fr); }
  .about__values  { grid-template-columns: 1fr; }
  .about__metrics { grid-template-columns: repeat(3, 1fr); }
  .form-row       { grid-template-columns: 1fr; }
  .footer__main   { grid-template-columns: 1fr; }

  .hero__stats     { gap: var(--space-8); }
  .hero__divider   { display: none; }

  .process-timeline {
    flex-direction: column;
    align-items: center;
  }

  .process-timeline::before { display: none; }

  .process-step {
    flex: none;
    width: 100%;
    max-width: 280px;
  }

  .process-step__arrow {
    display: none;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .solutions-grid { grid-template-columns: 1fr; }
  .partners-grid  { grid-template-columns: repeat(2, 1fr); }
  .hero__cta      { flex-direction: column; align-items: stretch; }
  .btn--lg        { text-align: center; }
}

/* ============================================================
   Contact form status message
   ============================================================ */
.form-status {
  margin: 0 0 var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md, 8px);
  font-size: var(--text-sm);
  line-height: 1.5;
}
.form-status--success {
  color: #00e676;
  background: rgba(0, 200, 83, 0.12);
  border: 1px solid rgba(0, 200, 83, 0.3);
}
.form-status--error {
  color: #ff6b6b;
  background: rgba(255, 82, 82, 0.10);
  border: 1px solid rgba(255, 82, 82, 0.3);
}