/* ============================================================
   Marketing Command Center — style.css
   Design: Dark industrial-editorial. Bebas Neue + DM Sans.
   Accent: Electric amber (#F5A623) on deep charcoal (#0D0D0D).
   ============================================================ */

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

:root {
  /* Palette */
  --bg:           #0D0D0D;
  --bg-2:         #141414;
  --bg-3:         #1C1C1C;
  --bg-4:         #242424;
  --border:       #2A2A2A;
  --border-hi:    #3A3A3A;
  --accent:       #F5A623;
  --accent-dim:   #C4841A;
  --accent-glow:  rgba(245, 166, 35, 0.18);
  --accent-glow2: rgba(245, 166, 35, 0.06);
  --text-1:       #F0EDE8;
  --text-2:       #9A9590;
  --text-3:       #5A5550;
  --success:      #3DD68C;
  --danger:       #FF5C5C;
  --info:         #5AABFF;

  /* Typography */
  --font-display: 'Bebas Neue', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  /* Layout */
  --sidebar-w:    260px;
  --topbar-h:     58px;
  --radius:       10px;
  --radius-lg:    16px;
  --transition:   0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-1);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
  /* Subtle grain overlay */
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
}

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: var(--border-hi); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* ── Sidebar ──────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform var(--transition);
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar__brand-icon {
  font-size: 28px;
  color: var(--accent);
  line-height: 1;
  filter: drop-shadow(0 0 8px var(--accent-dim));
}

.sidebar__brand-title {
  display: block;
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.08em;
  color: var(--text-1);
  line-height: 1;
}

.sidebar__brand-sub {
  display: block;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-top: 2px;
}

/* Nav */
.sidebar__nav {
  flex: 1;
  overflow-y: auto;
  padding: 20px 12px;
}

.sidebar__section-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 0 8px;
  margin-bottom: 10px;
}

.nav-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border: none;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-2);
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 400;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition), color var(--transition);
  margin-bottom: 3px;
  position: relative;
}

.nav-item:hover {
  background: var(--bg-3);
  color: var(--text-1);
}

.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent);
  font-weight: 500;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 3px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
}

.nav-item__icon {
  font-size: 16px;
  line-height: 1;
  flex-shrink: 0;
}

.nav-item__label { flex: 1; }

.nav-item__tag {
  font-size: 10px;
  font-weight: 500;
  background: var(--bg-4);
  color: var(--text-3);
  padding: 2px 7px;
  border-radius: 99px;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.nav-item.active .nav-item__tag {
  background: var(--accent-glow);
  color: var(--accent-dim);
}

/* Sidebar Footer */
.sidebar__footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar__status {
  display: flex;
  align-items: center;
  gap: 7px;
}

.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--text-3);
  flex-shrink: 0;
  transition: background 0.4s;
}

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

.status-label {
  font-size: 11px;
  color: var(--text-3);
  font-weight: 400;
}

.sidebar__version {
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.06em;
}

/* ── Topbar ───────────────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  height: var(--topbar-h);
  background: rgba(13,13,13,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 28px;
  z-index: 50;
}

.topbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.topbar__toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-2);
  border-radius: 2px;
  transition: var(--transition);
}

.topbar__breadcrumb {
  flex: 1;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.03em;
}

.topbar__date {
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

/* ── Main Layout ──────────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Views ────────────────────────────────────────────────── */
.view {
  display: none;
  flex-direction: column;
  flex: 1;
  padding: 36px 32px 60px;
  animation: fadeSlideIn 0.3s ease both;
}

.view.active { display: flex; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.view__hero {
  margin-bottom: 32px;
}

.view__title {
  font-family: var(--font-display);
  font-size: clamp(42px, 5vw, 64px);
  letter-spacing: 0.04em;
  line-height: 1;
  color: var(--text-1);
  margin-bottom: 10px;
}

.view__title em {
  font-style: normal;
  color: var(--accent);
}

.view__desc {
  font-size: 14px;
  color: var(--text-2);
  max-width: 560px;
  line-height: 1.65;
  font-weight: 300;
}

/* ── Cards Grid ───────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.cards-grid--wide {
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
}

/* ── Calculator Card ──────────────────────────────────────── */
.calc-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: border-color var(--transition), box-shadow var(--transition);
  animation: fadeSlideIn 0.35s ease both;
}

.calc-card:hover {
  border-color: var(--border-hi);
  box-shadow: 0 4px 32px rgba(0,0,0,0.4);
}

.calc-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.calc-card__title-wrap {}

.calc-card__abbr {
  font-family: var(--font-display);
  font-size: 32px;
  letter-spacing: 0.06em;
  color: var(--accent);
  line-height: 1;
}

.calc-card__name {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 2px;
}

.calc-card__icon {
  font-size: 28px;
  opacity: 0.18;
  line-height: 1;
  user-select: none;
}

/* Form fields */
.calc-card__fields {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.field label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}

.field input {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 13px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-1);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  -moz-appearance: textfield;
}

.field input::-webkit-outer-spin-button,
.field input::-webkit-inner-spin-button { -webkit-appearance: none; }

.field input::placeholder { color: var(--text-3); }

.field input:focus {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 3px var(--accent-glow2);
}

.field input.error { border-color: var(--danger); }

.field__hint {
  font-size: 10.5px;
  color: var(--text-3);
  line-height: 1.4;
}

/* Calculate button */
.calc-card__btn {
  width: 100%;
  padding: 12px;
  background: var(--accent);
  color: #0D0D0D;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.1em;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform 0.1s, box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.calc-card__btn:hover {
  background: #FFB83F;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.calc-card__btn:active { transform: scale(0.98); }

.calc-card__btn.loading {
  pointer-events: none;
  opacity: 0.7;
}

.calc-card__btn.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.2) 50%, transparent 100%);
  animation: shimmer 1s infinite;
}

@keyframes shimmer {
  from { transform: translateX(-100%); }
  to   { transform: translateX(100%); }
}

/* Inline error message */
.calc-card__error {
  font-size: 12px;
  color: var(--danger);
  text-align: center;
  min-height: 16px;
}

/* ── Modal ────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal-overlay[hidden] { display: none; }

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal {
  background: var(--bg-2);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 680px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
  animation: modalSlideUp 0.28s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes modalSlideUp {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal__close {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 32px; height: 32px;
  font-size: 18px;
  color: var(--text-2);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), color var(--transition);
  line-height: 1;
}

.modal__close:hover { background: var(--bg-4); color: var(--text-1); }

.modal__badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.14em;
  background: var(--accent-glow);
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 99px;
  margin-bottom: 14px;
}

.modal__title {
  font-family: var(--font-display);
  font-size: 36px;
  letter-spacing: 0.05em;
  color: var(--text-1);
  line-height: 1;
  margin-bottom: 16px;
}

.modal__result-wrap {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
}

.modal__result-value {
  font-family: var(--font-display);
  font-size: clamp(48px, 8vw, 72px);
  letter-spacing: 0.04em;
  color: var(--accent);
  line-height: 1;
  filter: drop-shadow(0 0 16px var(--accent-dim));
}

.modal__result-unit {
  font-size: 13px;
  color: var(--text-2);
  font-weight: 300;
  max-width: 180px;
  line-height: 1.4;
}

.modal__formula {
  font-size: 12px;
  font-family: 'Courier New', monospace;
  color: var(--text-3);
  background: var(--bg-3);
  padding: 8px 12px;
  border-radius: var(--radius);
  border-left: 3px solid var(--accent-dim);
  margin-bottom: 16px;
  line-height: 1.5;
}

.modal__divider {
  height: 1px;
  background: var(--border);
  margin-bottom: 16px;
}

.modal__interpretation {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
  font-weight: 300;
}

/* Forecast Table */
.modal__table-wrap {
  margin-top: 24px;
  overflow-x: auto;
}

.forecast-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
}

.forecast-table th {
  background: var(--bg-3);
  color: var(--text-3);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 8px 10px;
  text-align: right;
  border-bottom: 1px solid var(--border);
}

.forecast-table th:first-child { text-align: center; }

.forecast-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: right;
  color: var(--text-2);
  font-variant-numeric: tabular-nums;
}

.forecast-table td:first-child {
  text-align: center;
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.forecast-table tr:last-child td { border-bottom: none; }
.forecast-table tr:hover td { background: var(--bg-3); }
.forecast-table .profit-pos { color: var(--success); }
.forecast-table .profit-neg { color: var(--danger); }
.forecast-table .bep-row td { background: var(--accent-glow2); }

/* ── Toast ────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--bg-3);
  border: 1px solid var(--border-hi);
  color: var(--text-1);
  font-size: 13px;
  padding: 12px 22px;
  border-radius: 99px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  z-index: 300;
  white-space: nowrap;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.toast--error { border-color: var(--danger); color: var(--danger); }
.toast.toast--success { border-color: var(--success); color: var(--success); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 32px rgba(0,0,0,0.6);
  }

  .main {
    margin-left: 0;
  }

  .topbar__toggle {
    display: flex;
  }

  .view {
    padding: 24px 16px 48px;
  }

  .cards-grid,
  .cards-grid--wide {
    grid-template-columns: 1fr;
  }

  .modal { padding: 24px 18px; }
  .modal__result-value { font-size: 52px; }
}

@media (max-width: 480px) {
  .view__title { font-size: 36px; }
}