/* ============================================================
   Diamond Solution — Global Design System
   diamond.css — v1.0
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --navy-950: #030712;
  --navy-900: #0a0f1e;
  --navy-800: #0d1430;
  --navy-700: #111d42;
  --navy-600: #162050;
  --navy-500: #1e2d6e;

  --blue-400: #3b82f6;
  --blue-500: #2563eb;
  --blue-600: #1d4ed8;
  --diamond-blue: #00b4d8;
  --diamond-bright: #0ef6ff;

  --green-400: #4ade80;
  --green-500: #22c55e;
  --neon-green: #39ff14;
  --neon-soft: #a3e635;

  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;

  --white: #ffffff;
  --danger: #ef4444;
  --warning: #f59e0b;
  --success: #10b981;

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

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --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), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.4), 0 2px 4px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.4), 0 4px 6px rgba(0,0,0,0.3);
  --shadow-xl: 0 20px 25px rgba(0,0,0,0.5), 0 10px 10px rgba(0,0,0,0.3);
  --shadow-blue: 0 0 20px rgba(0,180,216,0.3);
  --shadow-neon: 0 0 20px rgba(57,255,20,0.25);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 960px;
  --nav-height: 70px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--navy-900);
  color: var(--slate-100);
  line-height: 1.6;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--diamond-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--diamond-bright);
}

ul, ol {
  list-style: none;
}

input, textarea, select, button {
  font-family: var(--font-sans);
}

/* --- Layout --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-20) 0;
}

.section--sm {
  padding: var(--space-12) 0;
}

.section--lg {
  padding: var(--space-24) 0;
}

/* --- Grid --- */
.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;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-col {
  flex-direction: column;
}

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--white);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
  color: var(--slate-300);
  line-height: 1.75;
}

.text-xs   { font-size: 0.75rem; }
.text-sm   { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg   { font-size: 1.125rem; }
.text-xl   { font-size: 1.25rem; }
.text-2xl  { font-size: 1.5rem; }
.text-3xl  { font-size: 1.875rem; }
.text-4xl  { font-size: 2.25rem; }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }

.text-center { text-align: center; }
.text-right  { text-align: right; }

.text-white       { color: var(--white); }
.text-slate-100   { color: var(--slate-100); }
.text-slate-300   { color: var(--slate-300); }
.text-slate-400   { color: var(--slate-400); }
.text-slate-500   { color: var(--slate-500); }
.text-diamond     { color: var(--diamond-blue); }
.text-neon        { color: var(--neon-green); }
.text-success     { color: var(--success); }
.text-warning     { color: var(--warning); }
.text-danger      { color: var(--danger); }

.gradient-text {
  background: linear-gradient(135deg, var(--diamond-bright), var(--neon-soft));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Section Headers --- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--diamond-blue);
  margin-bottom: var(--space-4);
}

.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--diamond-blue);
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--slate-400);
  max-width: 600px;
  line-height: 1.7;
}

.section-header {
  margin-bottom: var(--space-12);
}

.section-header.centered {
  text-align: center;
}

.section-header.centered .section-label {
  justify-content: center;
}

.section-header.centered .section-subtitle {
  margin: 0 auto;
}

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(10, 15, 30, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 180, 216, 0.1);
  transition: background var(--transition-base);
}

.navbar.scrolled {
  background: rgba(10, 15, 30, 0.98);
  box-shadow: var(--shadow-lg);
}

.navbar__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.navbar__logo {
  width: 36px;
  height: 36px;
}

.navbar__brand-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.navbar__brand-text span {
  color: var(--diamond-blue);
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.navbar__link {
  padding: var(--space-2) var(--space-3);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--slate-300);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
}

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

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.navbar__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--slate-300);
  transition: all var(--transition-base);
  border-radius: 2px;
}

/* Mobile nav */
.navbar__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--navy-800);
  border-bottom: 1px solid rgba(0, 180, 216, 0.15);
  padding: var(--space-4) var(--space-6);
  flex-direction: column;
  gap: var(--space-2);
  z-index: 999;
}

.navbar__mobile.open {
  display: flex;
}

.navbar__mobile .navbar__link {
  font-size: 1rem;
  padding: var(--space-3) var(--space-4);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 1.375rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1;
}

.btn--primary {
  background: var(--diamond-blue);
  color: var(--navy-950);
  border-color: var(--diamond-blue);
}

.btn--primary:hover {
  background: var(--diamond-bright);
  border-color: var(--diamond-bright);
  color: var(--navy-950);
  box-shadow: var(--shadow-blue);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--diamond-blue);
  border-color: var(--diamond-blue);
}

.btn--outline:hover {
  background: rgba(0, 180, 216, 0.1);
  color: var(--diamond-bright);
  border-color: var(--diamond-bright);
}

.btn--ghost {
  background: transparent;
  color: var(--slate-300);
  border-color: transparent;
}

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

.btn--neon {
  background: var(--neon-green);
  color: var(--navy-950);
  border-color: var(--neon-green);
  font-weight: 700;
}

.btn--neon:hover {
  background: var(--neon-soft);
  box-shadow: var(--shadow-neon);
  transform: translateY(-1px);
}

.btn--danger {
  background: var(--danger);
  color: var(--white);
  border-color: var(--danger);
}

.btn--danger:hover {
  background: #dc2626;
  transform: translateY(-1px);
}

.btn--sm {
  padding: 0.4rem 0.875rem;
  font-size: 0.8rem;
}

.btn--lg {
  padding: 0.875rem 2rem;
  font-size: 1rem;
}

.btn--full {
  width: 100%;
}

/* --- Cards --- */
.card {
  background: rgba(13, 20, 48, 0.8);
  border: 1px solid rgba(0, 180, 216, 0.12);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: rgba(0, 180, 216, 0.3);
  box-shadow: var(--shadow-blue);
  transform: translateY(-2px);
}

.card--flat {
  background: var(--navy-800);
  border-color: rgba(255,255,255,0.06);
}

.card--glass {
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-color: rgba(255,255,255,0.08);
}

.card__icon {
  width: 48px;
  height: 48px;
  background: rgba(0, 180, 216, 0.1);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  font-size: 1.5rem;
}

.card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--space-2);
}

.card__text {
  font-size: 0.9rem;
  color: var(--slate-400);
  line-height: 1.65;
}

/* --- Stats Cards --- */
.stat-card {
  background: rgba(13, 20, 48, 0.8);
  border: 1px solid rgba(0, 180, 216, 0.12);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
}

.stat-card__value {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--diamond-blue);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-card__label {
  font-size: 0.85rem;
  color: var(--slate-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
}

.badge--blue    { background: rgba(0,180,216,0.15); color: var(--diamond-blue); }
.badge--green   { background: rgba(16,185,129,0.15); color: var(--success); }
.badge--yellow  { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge--red     { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge--gray    { background: rgba(100,116,139,0.2); color: var(--slate-400); }
.badge--neon    { background: rgba(57,255,20,0.1); color: var(--neon-soft); }

.badge--dot::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

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

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--slate-300);
  margin-bottom: var(--space-2);
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.875rem;
  font-size: 0.9rem;
  color: var(--white);
  background: rgba(13, 20, 48, 0.8);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--diamond-blue);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.15);
}

.form-control::placeholder {
  color: var(--slate-500);
}

.form-control--error {
  border-color: var(--danger);
}

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

select.form-control {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  padding-right: 2.5rem;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--slate-500);
  margin-top: var(--space-1);
}

.form-error {
  font-size: 0.8rem;
  color: var(--danger);
  margin-top: var(--space-1);
}

/* --- Tables --- */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 180, 216, 0.12);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

thead {
  background: rgba(0, 180, 216, 0.08);
  border-bottom: 1px solid rgba(0, 180, 216, 0.15);
}

th {
  padding: 0.875rem 1rem;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--slate-400);
}

td {
  padding: 0.875rem 1rem;
  color: var(--slate-200);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: rgba(255,255,255,0.02);
}

tbody tr {
  transition: background var(--transition-fast);
}

/* --- Alerts --- */
.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  font-size: 0.9rem;
  border-left: 3px solid;
  margin-bottom: var(--space-4);
}

.alert--success {
  background: rgba(16,185,129,0.1);
  border-color: var(--success);
  color: #6ee7b7;
}

.alert--warning {
  background: rgba(245,158,11,0.1);
  border-color: var(--warning);
  color: #fcd34d;
}

.alert--danger {
  background: rgba(239,68,68,0.1);
  border-color: var(--danger);
  color: #fca5a5;
}

.alert--info {
  background: rgba(0,180,216,0.1);
  border-color: var(--diamond-blue);
  color: var(--slate-200);
}

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

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(0,180,216,0.25) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(57,255,20,0.07) 0%, transparent 60%),
    var(--navy-900);
  z-index: 0;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,180,216,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,180,216,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-20) var(--space-6);
}

.hero__overline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.375rem 0.875rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--diamond-blue);
  background: rgba(0,180,216,0.1);
  border: 1px solid rgba(0,180,216,0.2);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--slate-400);
  max-width: 560px;
  line-height: 1.75;
  margin-bottom: var(--space-8);
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* --- Footer --- */
.footer {
  background: var(--navy-950);
  border-top: 1px solid rgba(0, 180, 216, 0.1);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer__brand-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: var(--space-3);
}

.footer__brand-text span { color: var(--diamond-blue); }

.footer__tagline {
  font-size: 0.9rem;
  color: var(--slate-500);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--slate-400);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.footer__social-link:hover {
  background: rgba(0, 180, 216, 0.15);
  border-color: rgba(0, 180, 216, 0.3);
  color: var(--diamond-blue);
}

.footer__col-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

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

.footer__link {
  font-size: 0.875rem;
  color: var(--slate-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.8rem;
  color: var(--slate-600);
}

/* --- Page Header Banner --- */
.page-header {
  padding: calc(var(--nav-height) + var(--space-16)) 0 var(--space-16);
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(0,180,216,0.15) 0%, transparent 70%),
    var(--navy-900);
  border-bottom: 1px solid rgba(0, 180, 216, 0.1);
  text-align: center;
}

.page-header__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--diamond-blue);
  margin-bottom: var(--space-3);
}

.page-header__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  margin-bottom: var(--space-4);
}

.page-header__subtitle {
  font-size: 1.1rem;
  color: var(--slate-400);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Code / Mono --- */
code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: rgba(0,180,216,0.1);
  color: var(--diamond-bright);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
}

pre {
  font-family: var(--font-mono);
  background: rgba(3, 7, 18, 0.8);
  border: 1px solid rgba(0,180,216,0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  overflow-x: auto;
  font-size: 0.875rem;
  color: var(--slate-200);
  line-height: 1.7;
}

/* --- Utility --- */
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.relative { position: relative; }

.divider {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.06);
  margin: var(--space-8) 0;
}

/* --- Dashboard Sidebar Layout --- */
.dashboard-layout {
  display: flex;
  min-height: 100vh;
  padding-top: var(--nav-height);
}

.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--navy-800);
  border-right: 1px solid rgba(0,180,216,0.1);
  padding: var(--space-6) var(--space-4);
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
}

.sidebar__section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--slate-600);
  padding: var(--space-3) var(--space-3) var(--space-2);
  margin-top: var(--space-4);
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--slate-400);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.sidebar__link:hover,
.sidebar__link.active {
  background: rgba(0,180,216,0.08);
  color: var(--white);
}

.sidebar__link.active {
  border-left: 2px solid var(--diamond-blue);
  padding-left: calc(var(--space-3) - 2px);
}

.sidebar__icon {
  width: 18px;
  text-align: center;
  font-size: 1rem;
}

.dashboard-content {
  flex: 1;
  min-width: 0;
  padding: var(--space-8);
  background: var(--navy-900);
}

/* --- Status Indicators --- */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot--online  { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-dot--warning { background: var(--warning); box-shadow: 0 0 6px var(--warning); }
.status-dot--offline { background: var(--danger);  box-shadow: 0 0 6px var(--danger); }
.status-dot--pending { background: var(--slate-400); }

/* --- Tags --- */
.tag {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.06);
  color: var(--slate-300);
  border: 1px solid rgba(255,255,255,0.08);
}

/* --- Accordion --- */
.accordion-item {
  border: 1px solid rgba(0,180,216,0.12);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-3);
}

.accordion-trigger {
  width: 100%;
  padding: var(--space-5) var(--space-6);
  background: rgba(13,20,48,0.8);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  text-align: left;
  transition: background var(--transition-fast);
}

.accordion-trigger:hover {
  background: rgba(0,180,216,0.06);
}

.accordion-trigger .arrow {
  font-size: 0.75rem;
  transition: transform var(--transition-base);
  color: var(--slate-400);
}

.accordion-item.open .arrow {
  transform: rotate(180deg);
}

.accordion-body {
  display: none;
  padding: var(--space-5) var(--space-6);
  background: rgba(3,7,18,0.5);
  border-top: 1px solid rgba(0,180,216,0.08);
}

.accordion-item.open .accordion-body {
  display: block;
}

/* --- Progress Bar --- */
.progress {
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  background: linear-gradient(90deg, var(--diamond-blue), var(--diamond-bright));
  border-radius: var(--radius-full);
  transition: width 1s ease;
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--navy-950); }
::-webkit-scrollbar-thumb {
  background: rgba(0,180,216,0.3);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(0,180,216,0.5);
}

/* --- Page wrapper --- */
.page-wrapper {
  padding-top: var(--nav-height);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .sidebar { width: 220px; }
}

@media (max-width: 768px) {
  .navbar__nav,
  .navbar__actions { display: none; }
  .navbar__hamburger { display: flex; }

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

  .hero__title { font-size: 2.25rem; }
  .hero__actions { flex-direction: column; align-items: flex-start; }

  .footer__grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .footer__bottom { flex-direction: column; gap: var(--space-3); text-align: center; }

  .dashboard-layout { flex-direction: column; }
  .sidebar {
    width: 100%;
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid rgba(0,180,216,0.1);
  }

  .dashboard-content { padding: var(--space-5); }

  .section { padding: var(--space-12) 0; }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-4); }
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }
}