/* ==========================================================================
   QUANTUM COMPUTING SERVICES - MAIN DESIGN SYSTEM
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Dark Theme (Default) */
  --bg-primary: #070b14;
  --bg-secondary: #0e1626;
  --bg-tertiary: #152238;
  --bg-card: rgba(17, 27, 46, 0.75);
  --bg-card-hover: rgba(24, 38, 64, 0.85);
  --bg-card-solid: #111b2e;
  --bg-glass: rgba(14, 22, 38, 0.82);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(0, 229, 255, 0.4);
  --border-hover: rgba(0, 229, 255, 0.25);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-highlight: #ffffff;

  --accent-cyan: #00e5ff;
  --accent-cyan-glow: rgba(0, 229, 255, 0.25);
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --gradient-accent: linear-gradient(135deg, #00e5ff 0%, #3b82f6 50%, #6366f1 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(0, 229, 255, 0.15), transparent 70%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-cyan: 0 0 30px rgba(0, 229, 255, 0.2);

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  --header-height: 76px;
  --container-max-width: 1240px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #edf2f7;
  --bg-tertiary: #e2e8f0;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-card-solid: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.88);

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-focus: rgba(0, 163, 196, 0.4);
  --border-hover: rgba(0, 163, 196, 0.3);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-highlight: #020617;

  --accent-cyan: #0098b3;
  --accent-cyan-glow: rgba(0, 152, 179, 0.2);
  --accent-blue: #2563eb;
  --accent-indigo: #4f46e5;
  --accent-emerald: #059669;
  --accent-amber: #d97706;
  --accent-rose: #e11d48;

  --gradient-accent: linear-gradient(135deg, #0098b3 0%, #2563eb 50%, #4f46e5 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(0, 152, 179, 0.12), transparent 70%);
  --gradient-card: linear-gradient(180deg, rgba(0, 0, 0, 0.01) 0%, rgba(0, 0, 0, 0) 100%);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
  --shadow-cyan: 0 0 30px rgba(0, 152, 179, 0.15);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* Subtle background ambient mesh */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 600px;
  background: var(--gradient-glow);
  pointer-events: none;
  z-index: 0;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  position: relative;
  z-index: 1;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); font-weight: 800; }
h2 { font-size: clamp(1.85rem, 3.5vw, 2.65rem); }
h3 { font-size: clamp(1.25rem, 2.2vw, 1.65rem); }
h4 { font-size: 1.15rem; font-weight: 600; }

p {
  color: var(--text-secondary);
  font-size: 1.025rem;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover {
  color: var(--accent-blue);
}

ul {
  list-style: none;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #070b14 !important;
  font-weight: 700;
  box-shadow: 0 4px 18px var(--accent-cyan-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 229, 255, 0.4);
  color: #070b14;
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary) !important;
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--accent-cyan) !important;
  border: 1px solid var(--accent-cyan);
}

.btn-outline:hover {
  background: rgba(0, 229, 255, 0.1);
  box-shadow: 0 0 16px var(--accent-cyan-glow);
}

.btn-emergency {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: #ffffff !important;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.35);
  animation: pulse-emergency 2.5s infinite;
}

.btn-emergency:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
  color: #ffffff;
}

@keyframes pulse-emergency {
  0%, 100% { box-shadow: 0 4px 16px rgba(239, 68, 68, 0.35); }
  50% { box-shadow: 0 4px 25px rgba(239, 68, 68, 0.6); }
}

.btn-sm {
  padding: 0.5rem 0.95rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.95rem 1.9rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

/* Badges and Tags */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  background: rgba(0, 229, 255, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 229, 255, 0.2);
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
  border-color: rgba(16, 185, 129, 0.25);
}

.badge-amber {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
  border-color: rgba(245, 158, 11, 0.25);
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: currentColor;
  animation: blink 2s infinite ease-in-out;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* Section Header Shared */
.section-header {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 3.5rem auto;
}

.section-header .badge {
  margin-bottom: 0.9rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

/* Top Info Bar */
.top-bar {
  background: rgba(7, 11, 20, 0.95);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  padding: 0.5rem 0;
  position: relative;
  z-index: 101;
}

[data-theme="light"] .top-bar {
  background: #0f172a;
  color: #e2e8f0;
}
[data-theme="light"] .top-bar a {
  color: #38bdf8;
}

.top-bar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 500;
  color: #94a3b8;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-primary);
  font-weight: 600;
}

.contact-link:hover {
  color: var(--accent-cyan);
}

/* Main Site Header */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  height: 68px;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.45));
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

[data-theme="dark"] .brand-logo-img {
  filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.45)) drop-shadow(0 0 2px rgba(255, 255, 255, 0.25));
}

[data-theme="light"] .brand-logo-img {
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.15));
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.08);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.brand-name span {
  color: var(--accent-cyan);
}

.brand-tagline {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Nav Links */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 0.35rem 0;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: width var(--transition-fast);
  border-radius: var(--radius-full);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

/* Theme Toggle */
.theme-toggle-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  cursor: pointer;
  padding: 0.4rem;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
  padding: 5rem 0 4.5rem 0;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.hero-title {
  margin-bottom: 1.25rem;
  font-size: clamp(2.3rem, 4.5vw, 3.6rem);
  letter-spacing: -0.03em;
}

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

.hero-description {
  font-size: 1.15rem;
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-trust-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  width: 100%;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.trust-item svg {
  color: var(--accent-cyan);
  flex-shrink: 0;
}

/* Hero Terminal & Widget */
.hero-widget-card {
  background: var(--bg-card-solid);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 229, 255, 0.08);
  overflow: hidden;
  position: relative;
}

.widget-header {
  background: rgba(0, 0, 0, 0.35);
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}

.widget-dots {
  display: flex;
  gap: 6px;
}

.widget-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.widget-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.widget-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.widget-metric-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
}

.metric-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  padding: 0.85rem;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.metric-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-value {
  font-size: 1.15rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.metric-value.good { color: var(--accent-emerald); }
.metric-value.highlight { color: var(--accent-cyan); }

.widget-quick-connect {
  background: rgba(0, 229, 255, 0.05);
  border: 1px dashed rgba(0, 229, 255, 0.3);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.quick-connect-title {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pin-input-group {
  display: flex;
  gap: 0.5rem;
}

.pin-input {
  flex: 1;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  padding: 0.55rem 0.8rem;
  outline: none;
  letter-spacing: 0.1em;
  text-align: center;
}

.pin-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan-glow);
}

/* ==========================================================================
   EMERGENCY BANNER
   ========================================================================== */

.emergency-banner {
  background: linear-gradient(90deg, #1e111a 0%, #171c2b 50%, #0d1e2b 100%);
  border-top: 1px solid rgba(244, 63, 94, 0.3);
  border-bottom: 1px solid rgba(0, 229, 255, 0.2);
  padding: 1.25rem 0;
  position: relative;
  z-index: 10;
}

[data-theme="light"] .emergency-banner {
  background: linear-gradient(90deg, #fee2e2 0%, #e0f2fe 100%);
  border-color: #fca5a5;
}

.emergency-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.emergency-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.emergency-icon-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(239, 68, 68, 0.2);
  color: var(--accent-rose);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.emergency-text h3 {
  font-size: 1.05rem;
  margin-bottom: 0.15rem;
}

.emergency-text p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.emergency-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 5rem 0 2rem 0;
  position: relative;
  z-index: 10;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-col h4 {
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
  position: relative;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-cyan);
  transform: translateX(3px);
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.footer-contact-item svg {
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.footer-legal-links {
  display: flex;
  gap: 1.5rem;
}

.footer-legal-links a {
  color: var(--text-muted);
}

.footer-legal-links a:hover {
  color: var(--text-primary);
}