/* ============================================================
   css/styles.css — Bioelectronica 9 — Paleta Clínica Institucional
   ============================================================ */

/* ── Google Fonts: Montserrat + Open Sans ─────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800;900&family=Open+Sans:wght@400;500;600&display=swap');

/* ── Variables CSS — Clínica Institucional ───────────────── */
:root {
  /*
   * PALETA: Azul cobalto + Blanco + Gris plateado
   * La más usada en salud. Segura, confiable, profesional.
   * #003B8E  #0057C8  #00A3E0  #8FA8C8  #E8EDF5  #FFFFFF
   */

  /* Azules institucionales */
  --color-primary:       #003B8E;   /* Azul cobalto profundo */
  --color-primary-mid:   #0057C8;   /* Azul cobalto medio */
  --color-primary-light: #00A3E0;   /* Azul cielo / acento */

  /* Grises plateados */
  --color-silver:        #8FA8C8;   /* Gris azulado plateado */
  --color-bg-light:      #E8EDF5;   /* Fondo gris muy claro */
  --color-bg-mid:        #D4DCE8;   /* Fondo gris medio */

  /* Blancos */
  --color-white:         #FFFFFF;
  --color-white-off:     #F7F9FC;   /* Blanco ligeramente azulado */

  /* Textos */
  --color-text:          #1A2B4A;   /* Azul oscuro para texto */
  --color-text-muted:    #5A6E8C;   /* Gris azulado para texto secundario */
  --color-text-light:    #8FA8C8;   /* Gris plateado para captions */

  /* Utilidades */
  --color-whatsapp:      #25D366;
  --color-border:        #C8D4E8;   /* Borde gris azulado */
  --color-border-light:  #E8EDF5;
  --color-error:         #DC2626;
  --color-success:       #059669;
  --color-warning:       #D97706;

  /* ── Gradientes de sección ────────────────────────────── */
  /* Hero: azul muy oscuro casi negro — máximo contraste con navbar */
  --grad-hero:      linear-gradient(150deg, #001A4D 0%, #002D7A 55%, #003B8E 100%);
  /* Nosotros: blanco puro — contraste total con hero oscuro */
  --grad-nosotros:  linear-gradient(160deg, #FFFFFF 0%, #F0F5FF 100%);
  /* Servicios: azul medio vibrante — diferente al hero */
  --grad-servicios: linear-gradient(150deg, #0057C8 0%, #0070D4 60%, #0088E0 100%);
  /* Productos: gris azulado muy claro — contraste con servicios */
  --grad-productos: linear-gradient(160deg, #EEF3FB 0%, #FFFFFF 100%);
  /* Marcas: azul oscuro profundo — diferente al servicios */
  --grad-marcas:    linear-gradient(150deg, #001A4D 0%, #002D7A 100%);
  /* CTA: azul cielo brillante — el más claro de los oscuros */
  --grad-cta:       linear-gradient(135deg, #0057C8 0%, #00A3E0 100%);
  /* Contacto: blanco */
  --grad-contacto:  linear-gradient(160deg, #FFFFFF 0%, #F7F9FC 100%);

  /* Gradientes de acento */
  --grad-blue:      linear-gradient(135deg, #003B8E 0%, #0057C8 100%);
  --grad-sky:       linear-gradient(135deg, #0057C8 0%, #00A3E0 100%);
  --grad-silver:    linear-gradient(135deg, #8FA8C8 0%, #C8D4E8 100%);

  /* Tipografías */
  --font-heading: 'Montserrat', sans-serif;  /* Títulos, botones, labels, badges */
  --font-body:    'Open Sans', sans-serif;   /* Párrafos, descripciones, formularios */

  /* Tamaños de fuente (xs=12px, sm=14px, base=16px, lg=18px...) */
  --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 */

  /* Espaciado */
  --spacing-xs:  0.25rem;
  --spacing-sm:  0.5rem;
  --spacing-md:  1rem;
  --spacing-lg:  1.5rem;
  --spacing-xl:  2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 5rem;

  /* Bordes */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   20px;
  --radius-2xl:  28px;
  --radius-full: 9999px;

  /* Sombras */
  --shadow-sm:   0 1px 4px rgba(0,59,142,0.08);
  --shadow-md:   0 4px 16px rgba(0,59,142,0.12);
  --shadow-lg:   0 12px 40px rgba(0,59,142,0.16);
  --shadow-xl:   0 20px 60px rgba(0,59,142,0.22);
  --shadow-blue: 0 6px 24px rgba(0,87,200,0.35);
  --shadow-glow: 0 0 32px rgba(0,163,224,0.3);

  /* Transiciones */
  --transition-fast:   150ms cubic-bezier(0.4,0,0.2,1);
  --transition-normal: 300ms cubic-bezier(0.4,0,0.2,1);
  --transition-slow:   500ms cubic-bezier(0.4,0,0.2,1);

  --navbar-height: 72px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  color: var(--color-primary);
}

/* ── Utilidades ───────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: var(--spacing-xl);
}

.section { padding-block: var(--spacing-3xl); }

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section__eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-heading);
}

.section__eyebrow--light { color: rgba(255,255,255,0.75); }

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.section__title--light { color: var(--color-white); }

.section__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 640px;
  margin-inline: auto;
  line-height: 1.75;
  font-family: var(--font-body);
}

.section__subtitle--light { color: rgba(255,255,255,0.75); }

.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* ── Divisor azul ─────────────────────────────────────────── */
.gold-divider {
  width: 48px;
  height: 3px;
  background: var(--grad-sky);
  margin: var(--spacing-md) auto var(--spacing-lg);
  border-radius: 2px;
}

/* ── Scroll reveal ────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.75s cubic-bezier(0.4,0,0.2,1),
              transform 0.75s cubic-bezier(0.4,0,0.2,1);
}

.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.22s; }
.reveal--delay-3 { transition-delay: 0.34s; }
.reveal--delay-4 { transition-delay: 0.46s; }
.reveal--delay-5 { transition-delay: 0.58s; }
.reveal--left  { transform: translateX(-40px); }
.reveal--right { transform: translateX(40px); }
.reveal--left.visible, .reveal--right.visible { transform: translateX(0); }

/* ── Navbar ───────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--navbar-height);
  background: #001A4D;
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 2px solid rgba(0,163,224,0.35);
  display: flex;
  align-items: center;
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.navbar--scrolled {
  background: #001030;
  box-shadow: 0 4px 24px rgba(0,26,77,0.5);
  border-bottom-color: rgba(0,163,224,0.5);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: var(--spacing-xl);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-white);
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.navbar__logo img { height: 40px; width: auto; }

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.navbar__link {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  transition: color var(--transition-fast);
  position: relative;
  padding-bottom: 2px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary-light);
  border-radius: 2px;
  transition: width var(--transition-normal);
}

.navbar__link:hover { color: var(--color-white); }
.navbar__link:hover::after { width: 100%; }

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
  color: var(--color-white);
}

.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* ── Sidebar ──────────────────────────────────────────────── */
.sidebar {
  width: 270px;
  min-height: calc(100vh - var(--navbar-height));
  background: #001A4D;
  padding: var(--spacing-lg) 0;
  flex-shrink: 0;
  border-right: 1px solid rgba(0,163,224,0.15);
}

.sidebar__nav { display: flex; flex-direction: column; }

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: 0.85rem var(--spacing-lg);
  color: rgba(255,255,255,0.65);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  letter-spacing: 0.02em;
}

.sidebar__link:hover,
.sidebar__link.active {
  background: rgba(0,163,224,0.15);
  color: var(--color-white);
  border-left-color: var(--color-primary-light);
}

.sidebar__link svg { width: 18px; height: 18px; flex-shrink: 0; }

.layout { display: flex; min-height: calc(100vh - var(--navbar-height)); }

.layout__content {
  flex: 1;
  padding: var(--spacing-xl);
  background-color: var(--color-bg-light);
  overflow-x: hidden;
}

/* ── Botones ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1;
  transition: all var(--transition-normal);
  white-space: nowrap;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.btn:active { transform: scale(0.97) !important; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; }

/* Botón primario — azul cobalto */
.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 2px 12px rgba(0,59,142,0.3);
}

.btn--primary:hover {
  background: var(--color-primary-mid);
  box-shadow: var(--shadow-blue);
  transform: translateY(-2px);
}

/* Botón acento — azul cielo */
.btn--accent {
  background: var(--color-primary-light);
  color: var(--color-white);
  box-shadow: 0 2px 12px rgba(0,163,224,0.3);
}

.btn--accent:hover {
  filter: brightness(1.1);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

/* Botón outline azul */
.btn--gold {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn--gold:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-blue);
}

/* Outline sobre fondo claro */
.btn--outline {
  background: transparent;
  border: 2px solid var(--color-primary-mid);
  color: var(--color-primary-mid);
}

.btn--outline:hover {
  background: var(--color-primary-mid);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Outline blanco (sobre fondos azules) */
.btn--outline-white {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.7);
  color: var(--color-white);
}

.btn--outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

.btn--whatsapp {
  background: var(--color-whatsapp);
  color: var(--color-white);
  box-shadow: 0 2px 12px rgba(37,211,102,0.3);
}

.btn--whatsapp:hover { filter: brightness(1.08); transform: translateY(-2px); }

.btn--comprar {
  background: var(--color-primary-light);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-shadow: 0 2px 12px rgba(0,163,224,0.35);
  border: none;
  padding: 0.55rem 2rem;
}

.btn--comprar:hover {
  background: var(--color-primary-mid);
  box-shadow: 0 4px 18px rgba(0,87,200,0.4);
  transform: translateY(-2px);
}

.btn--danger { background: var(--color-error); color: var(--color-white); }
.btn--danger:hover { filter: brightness(1.1); }

.btn--sm { padding: 0.45rem 1rem; font-size: var(--text-xs); }
.btn--lg { padding: 0.9rem 2.25rem; font-size: var(--text-base); }
.btn--full { width: 100%; }

/* ── Tarjetas ─────────────────────────────────────────────── */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
  border: 1px solid var(--color-border);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
  border-color: rgba(0,87,200,0.25);
}

.card__image { width: 100%; aspect-ratio: 4/3; object-fit: cover; background: var(--color-bg-light); }

.card__image--placeholder {
  display: flex; align-items: center; justify-content: center;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-bg-light), var(--color-bg-mid));
  color: var(--color-border); font-size: 3rem;
}

.card__body { padding: var(--spacing-lg); }

.card__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.card__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.card__price {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-primary-mid);
  margin-bottom: var(--spacing-md);
}

.card__footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-sm);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: var(--spacing-xl);
}

/* ── Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center;
  padding: 0.2rem 0.7rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-xs); font-weight: 700; line-height: 1;
  white-space: nowrap; letter-spacing: 0.06em; text-transform: uppercase;
}

.badge--primary   { background: rgba(0,59,142,0.1);   color: var(--color-primary); }
.badge--accent    { background: rgba(0,163,224,0.12);  color: var(--color-primary-mid); }
.badge--gold      { background: rgba(143,168,200,0.2); color: var(--color-primary); }
.badge--neon      { background: rgba(5,150,105,0.1);   color: var(--color-success); }
.badge--muted     { background: var(--color-bg-light); color: var(--color-text-muted); }
.badge--success   { background: rgba(5,150,105,0.1);   color: var(--color-success); }
.badge--warning   { background: rgba(217,119,6,0.1);   color: var(--color-warning); }
.badge--danger    { background: rgba(220,38,38,0.1);   color: var(--color-error); }

/* ── Formularios ──────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: var(--spacing-xs); margin-bottom: var(--spacing-lg); }

.form-label {
  font-family: var(--font-heading);
  font-size: var(--text-sm); font-weight: 700;
  color: var(--color-primary); letter-spacing: 0.02em;
}

.form-input, .form-control {
  width: 100%; padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body); font-size: var(--text-base);
  color: var(--color-text); background: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-input:focus, .form-control:focus {
  border-color: var(--color-primary-mid);
  box-shadow: 0 0 0 3px rgba(0,87,200,0.12);
}

.form-input.is-invalid, .form-control.is-invalid { border-color: var(--color-error); }
.form-input::placeholder, .form-control::placeholder { color: var(--color-text-light); }
textarea.form-input, textarea.form-control { resize: vertical; min-height: 120px; }

.form-error { font-size: var(--text-xs); color: var(--color-error); display: none; }
.form-error.visible { display: block; }

.alert { padding: var(--spacing-md) var(--spacing-lg); border-radius: var(--radius-md); font-size: var(--text-sm); font-weight: 600; display: none; }
.alert.visible { display: block; }
.alert--success { background: rgba(5,150,105,0.08);  color: var(--color-success); border: 1px solid rgba(5,150,105,0.25); }
.alert--error   { background: rgba(220,38,38,0.07);  color: var(--color-error);   border: 1px solid rgba(220,38,38,0.2); }
.alert--info    { background: rgba(0,87,200,0.07);   color: var(--color-primary-mid); border: 1px solid rgba(0,87,200,0.2); }

/* ── Tablas ───────────────────────────────────────────────── */
.table-wrapper { overflow-x: auto; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); }

.table { width: 100%; border-collapse: collapse; background: var(--color-white); font-size: var(--text-sm); }

.table th {
  background: var(--color-primary); color: var(--color-white);
  font-family: var(--font-heading); font-weight: 700;
  font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.08em;
  padding: var(--spacing-md) var(--spacing-lg); text-align: left; white-space: nowrap;
}

.table td { padding: var(--spacing-md) var(--spacing-lg); border-bottom: 1px solid var(--color-border); color: var(--color-text); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: rgba(0,87,200,0.04); }
.table__actions { display: flex; gap: var(--spacing-sm); flex-wrap: wrap; }

/* ── Dashboard stats ──────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: var(--spacing-lg); margin-bottom: var(--spacing-2xl); }

.stat-card {
  background: var(--color-white); border-radius: var(--radius-lg);
  padding: var(--spacing-xl); box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: var(--spacing-sm);
  border: 1px solid var(--color-border); border-top: 3px solid var(--color-primary);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.stat-card--accent { border-top-color: var(--color-primary-light); }
.stat-card--gold   { border-top-color: var(--color-primary-mid); }
.stat-card--neon   { border-top-color: var(--color-success); }

.stat-card__label { font-family: var(--font-heading); font-size: var(--text-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-muted); }
.stat-card__value { font-family: var(--font-heading); font-size: 2.25rem; font-weight: 800; color: var(--color-primary); line-height: 1; }

/* ── Filtros ──────────────────────────────────────────────── */
.filter-bar { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); margin-bottom: var(--spacing-xl); }

.filter-btn {
  padding: 0.45rem 1.2rem; border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  font-family: var(--font-heading); font-size: var(--text-xs); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--color-text-muted); background: var(--color-white);
  transition: all var(--transition-fast);
}

.filter-btn:hover { border-color: var(--color-primary-mid); color: var(--color-primary-mid); background: rgba(0,87,200,0.05); }
.filter-btn.active { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); box-shadow: 0 2px 10px rgba(0,59,142,0.3); }

/* ── Spinner ──────────────────────────────────────────────── */
.spinner { display: inline-block; width: 22px; height: 22px; border: 2px solid rgba(255,255,255,0.25); border-top-color: currentColor; border-radius: 50%; animation: spin 0.75s linear infinite; }
.spinner--dark { border-color: rgba(0,87,200,0.2); border-top-color: var(--color-primary-mid); }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Animaciones ──────────────────────────────────────────── */
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

.fade-in { animation: fadeIn 0.7s ease forwards; }
.fade-in--delay-1 { animation-delay: 0.1s; opacity: 0; }
.fade-in--delay-2 { animation-delay: 0.22s; opacity: 0; }
.fade-in--delay-3 { animation-delay: 0.34s; opacity: 0; }
.fade-in--delay-4 { animation-delay: 0.46s; opacity: 0; }

/* ── Modal ────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,59,142,0.5); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; padding: var(--spacing-lg);
  animation: fadeIn 0.25s ease;
}

.modal {
  background: var(--color-white); border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl); width: 100%; max-width: 500px;
  max-height: 90vh; overflow-y: auto; border: 1px solid var(--color-border);
}

.modal__header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--spacing-lg) var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-primary);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal__title { font-family: var(--font-heading); font-size: var(--text-lg); font-weight: 800; color: var(--color-white); text-transform: uppercase; letter-spacing: 0.04em; }
.modal__close { background: rgba(255,255,255,0.15); border: none; font-size: 1rem; cursor: pointer; color: var(--color-white); padding: 0.35rem 0.6rem; border-radius: var(--radius-md); line-height: 1; transition: background var(--transition-fast); }
.modal__close:hover { background: rgba(255,255,255,0.25); }
.modal form { padding: var(--spacing-xl); }
.modal__footer { display: flex; gap: var(--spacing-md); margin-top: var(--spacing-lg); }

/* ── Section placeholders ─────────────────────────────────── */
.section-loading { display: flex; align-items: center; gap: var(--spacing-md); padding: var(--spacing-xl); color: var(--color-text-muted); font-size: var(--text-sm); }

.section-placeholder { background: var(--color-white); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: var(--spacing-2xl); text-align: center; color: var(--color-text-muted); border: 1px solid var(--color-border); }
.section-placeholder__icon { font-size: 2.5rem; margin-bottom: var(--spacing-md); }
.section-placeholder__text { font-size: var(--text-sm); }

.section-header { margin-bottom: var(--spacing-xl); }

.section-header__title { font-family: var(--font-heading); font-size: var(--text-2xl); font-weight: 800; color: var(--color-primary); margin-bottom: var(--spacing-xs); text-transform: uppercase; letter-spacing: -0.01em; }
.section-header__subtitle { font-size: var(--text-sm); color: var(--color-text-muted); }



/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --navbar-height: 64px; }

  html { font-size: 16px; }

  .navbar__menu {
    display: none;
    position: absolute;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(12,15,26,0.98);
    backdrop-filter: blur(16px);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid rgba(201,169,110,0.15);
  }

  .navbar__menu.open { display: flex; }

  .navbar__link {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
  }

  .navbar__link::after { display: none; }
  .navbar__toggle { display: flex; }

  .sidebar { width: 100%; min-height: auto; }
  .layout { flex-direction: column; }
  .cards-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .container { padding-inline: var(--spacing-lg); }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .btn--lg { padding: 0.875rem 1.75rem; }
}