/* ============================================
   Ads Studio Management System
   ডিজাইন সিস্টেম: চারকোল ব্ল্যাক + এমারেল্ড গ্রিন
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=Hind+Siliguri:wght@300;400;500;600;700&family=Space+Mono&display=swap');

:root {
  /* Base colors */
  --bg: #101312;
  --bg2: #171b19;
  --bg3: #1e2320;
  --bg4: #262c28;
  --surface: #1a1f1c;

  /* Emerald accent */
  --em: #1FA971;
  --em-light: #3ECF8E;
  --em-dim: rgba(31,169,113,0.12);
  --em-border: rgba(31,169,113,0.25);

  /* Text */
  --text: #EDEFEC;
  --text2: rgba(237,239,236,0.65);
  --text3: rgba(237,239,236,0.4);
  --text4: rgba(237,239,236,0.18);

  /* Status colors */
  --success: #3ECF8E;
  --warning: #E8B84B;
  --danger: #E05252;
  --info: #4D9EFF;

  --border: rgba(237,239,236,0.08);
  --radius: 8px;
  --radius-sm: 4px;

  --shadow: 0 4px 24px rgba(0,0,0,0.35);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Hind Siliguri', sans-serif;
  font-size: 14px;
  line-height: 1.7;
  min-height: 100vh;
}

h1, h2, h3, h4, .display {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
}

a { color: var(--em-light); text-decoration: none; }
a:hover { color: var(--em); }

.mono { font-family: 'Space Mono', monospace; }

/* ============================================
   LAYOUT
   ============================================ */

.app-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .sidebar.open { display: flex; position: fixed; z-index: 200; height: 100vh; }
}

/* Sidebar */
.sidebar {
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 24px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-brand {
  padding: 0 24px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.sidebar-brand-name {
  font-family: 'Syne', sans-serif;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
}

.sidebar-brand-name span { color: var(--em-light); }

.sidebar-brand-role {
  font-family: 'Space Mono', monospace;
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--em-light);
  margin-top: 4px;
}

.nav-section {
  padding: 8px 24px;
  font-family: 'Space Mono', monospace;
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text4);
  margin-top: 16px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 24px;
  color: var(--text2);
  font-size: 13px;
  font-weight: 500;
  border-left: 2px solid transparent;
  transition: all 0.2s cubic-bezier(0.2,0.8,0.2,1);
}

.nav-item:hover {
  background: var(--bg3);
  color: var(--text);
  padding-left: 27px;
}

.nav-item.active {
  background: var(--em-dim);
  color: var(--em-light);
  border-left-color: var(--em);
}

.nav-icon { width: 18px; text-align: center; flex-shrink: 0; opacity: 0.8; }

/* Topbar */
.topbar {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title {
  font-family: 'Syne', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 6px;
  background: var(--bg3);
  border-radius: 30px;
  border: 1px solid var(--border);
}

.avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--em-dim);
  color: var(--em-light);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
}

.topbar-user-name { font-size: 13px; font-weight: 600; color: var(--text); }
.topbar-user-role { font-size: 10px; color: var(--text3); }

/* Main content area */
.main-content {
  padding: 28px;
  max-width: 1400px;
}

/* ============================================
   COMPONENTS
   ============================================ */

/* Card */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-family: 'Syne', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

/* Stat card */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s cubic-bezier(0.2,0.8,0.2,1), border-color 0.25s, box-shadow 0.25s;
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--em-border);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--em);
  transform: scaleX(0.3);
  transform-origin: left;
  transition: transform 0.35s cubic-bezier(0.2,0.8,0.2,1);
}
.stat-card:hover::before { transform: scaleX(1); }

.stat-label {
  font-family: 'Space Mono', monospace;
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 10px;
}

.stat-value {
  font-family: 'Syne', sans-serif;
  font-size: 30px;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
}

.stat-value.em { color: var(--em-light); }

.stat-delta {
  font-size: 11px;
  color: var(--em-light);
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-delta.down { color: var(--danger); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-family: 'Hind Siliguri', sans-serif;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.2,0.8,0.2,1);
  text-decoration: none;
}

.btn-primary {
  background: var(--em);
  color: #0a1410;
}
.btn-primary:hover {
  background: var(--em-light);
  color: #0a1410;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(31,169,113,0.25);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text2);
}
.btn-outline:hover { border-color: var(--em); color: var(--em-light); }

.btn-danger {
  background: rgba(224,82,82,0.12);
  color: var(--danger);
  border-color: rgba(224,82,82,0.3);
}
.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-sm { padding: 6px 14px; font-size: 12px; }

/* Forms */
.form-group { margin-bottom: 18px; }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text2);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  color: var(--text);
  font-family: 'Hind Siliguri', sans-serif;
  font-size: 14px;
  transition: border-color 0.15s;
}

.form-control:focus {
  outline: none;
  border-color: var(--em);
}

.form-control::placeholder { color: var(--text4); }

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23666' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
}

textarea.form-control { resize: vertical; min-height: 90px; }

/* Table */
.table-wrap { overflow-x: auto; }

table.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  font-family: 'Space Mono', monospace;
  font-size: 9px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text3);
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: 14px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text2);
  vertical-align: middle;
}

.data-table tr:hover td { background: var(--bg3); }

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.badge-success { background: rgba(62,207,142,0.12); color: var(--success); }
.badge-warning { background: rgba(232,184,75,0.12); color: var(--warning); }
.badge-danger { background: rgba(224,82,82,0.12); color: var(--danger); }
.badge-info { background: rgba(77,158,255,0.12); color: var(--info); }
.badge-muted { background: var(--bg4); color: var(--text3); }

/* Login page */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.login-wrap::before {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(31,169,113,0.1) 0%, transparent 70%);
  top: -100px; right: -100px;
}

.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 44px 40px;
  width: 100%;
  max-width: 400px;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow);
}

.login-brand {
  text-align: center;
  margin-bottom: 32px;
}

.login-brand-name {
  font-family: 'Syne', sans-serif;
  font-size: 26px;
  font-weight: 800;
  color: var(--text);
}
.login-brand-name span { color: var(--em-light); }

.login-brand-sub {
  font-size: 12px;
  color: var(--text3);
  margin-top: 6px;
  font-family: 'Space Mono', monospace;
  letter-spacing: 1px;
}

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 18px;
}

.alert-danger { background: rgba(224,82,82,0.1); color: var(--danger); border: 1px solid rgba(224,82,82,0.25); }
.alert-success { background: rgba(62,207,142,0.1); color: var(--success); border: 1px solid rgba(62,207,142,0.25); }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text3);
}

.empty-state-icon { font-size: 32px; margin-bottom: 12px; opacity: 0.4; }

/* Progress bar */
.progress-track {
  height: 6px;
  background: var(--bg4);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--em);
  border-radius: 4px;
}

/* Utility */
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.text-muted { color: var(--text3); }
.text-sm { font-size: 12px; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--em-dim); }