/* ==========================================================================
   Bunna AI Khmer Studio Agent — Ocean Blue Web Theme
   ========================================================================== */

:root {
  --bg-main: #06152B;
  --bg-card: #0B203B;
  --bg-card-inner: #06162B;
  --border-color: #183B66;
  --border-focus: #38BDF8;
  
  --primary-blue: #0284C7;
  --primary-blue-hover: #0369A1;
  --accent-sky: #38BDF8;
  
  --success-green: #10B981;
  --success-green-hover: #059669;
  --accent-mint: #34D399;
  
  --danger-red: #E11D48;
  --danger-red-hover: #BE123C;

  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-sub: #CBD5E1;

  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;
  
  --font-family: 'Kantumruy Pro', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: 14.5px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Container */
.app-container {
  max-width: 1200px;
  width: 95%;
  margin: 20px auto 40px auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Header */
.app-header {
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

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

.logo-icon {
  font-size: 34px;
  line-height: 1;
}

.brand-text h1 {
  font-size: 19px;
  font-weight: 700;
  color: #FFFFFF;
}

.brand-text h1 span {
  color: var(--accent-sky);
  font-weight: 500;
  font-size: 16px;
}

.brand-text p {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.header-badges {
  display: flex;
  gap: 10px;
}

.badge {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success {
  background: rgba(16, 185, 129, 0.18);
  border: 1px solid var(--success-green);
  color: var(--accent-mint);
}

.badge-web {
  background: rgba(2, 132, 199, 0.18);
  border: 1px solid var(--primary-blue);
  color: var(--accent-sky);
}

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 6px;
  gap: 8px;
}

.tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 12px 18px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all 0.2s ease;
}

.tab-btn:hover {
  color: var(--text-main);
  background: rgba(56, 189, 248, 0.08);
}

.tab-btn.active {
  background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #0284C7, stop:1 #0369A1);
  background: linear-gradient(180deg, #0284C7 0%, #0369A1 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
}

/* Tab Content */
.tab-pane {
  display: none;
  flex-direction: column;
  gap: 16px;
}

.tab-pane.active {
  display: flex;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent-sky);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Form Controls */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-sub);
}

.form-row {
  display: flex;
  gap: 14px;
  align-items: center;
}

.form-row.wrap {
  flex-wrap: wrap;
}

textarea.form-control,
input[type="text"].form-control,
select.form-control {
  background: var(--bg-card-inner);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: #FFFFFF;
  font-family: inherit;
  font-size: 14px;
  outline: none;
  width: 100%;
  transition: border-color 0.2s ease;
}

textarea.form-control:focus,
input[type="text"].form-control:focus,
select.form-control:focus {
  border-color: var(--border-focus);
}

textarea.form-control {
  resize: vertical;
  min-height: 130px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 700;
  border-radius: var(--radius-md);
  padding: 10px 22px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
}

.btn-blue {
  background: linear-gradient(180deg, #0284C7 0%, #0369A1 100%);
  border: 1.5px solid #38BDF8;
  color: #FFFFFF;
}

.btn-blue:hover {
  background: linear-gradient(180deg, #38BDF8 0%, #0284C7 100%);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.4);
}

.btn-green {
  background: linear-gradient(180deg, #10B981 0%, #047857 100%);
  border: 1.5px solid #34D399;
  color: #FFFFFF;
}

.btn-green:hover {
  background: linear-gradient(180deg, #34D399 0%, #059669 100%);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
}

.btn-red {
  background: linear-gradient(180deg, #E11D48 0%, #BE123C 100%);
  border: 1.5px solid #FB7185;
  color: #FFFFFF;
}

.btn-secondary {
  background: #0B203B;
  border: 1.5px solid #1E4976;
  color: var(--text-sub);
}

.btn-secondary:hover {
  background: #143258;
  color: #FFFFFF;
}

/* Audio Player */
.player-card {
  background: var(--bg-card-inner);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

audio {
  width: 100%;
  border-radius: var(--radius-sm);
  filter: invert(0.88) hue-rotate(180deg);
}

/* Wave Visualizer Canvas */
.visualizer-container {
  background: var(--bg-card-inner);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  text-align: center;
}

canvas#audioVisualizer {
  width: 100%;
  height: 60px;
  display: block;
}

/* Chat Container */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 420px;
  gap: 12px;
}

.chat-history {
  flex: 1;
  background: var(--bg-card-inner);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.chat-bubble {
  max-width: 80%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.5;
}

.chat-bubble.user {
  align-self: flex-end;
  background: linear-gradient(180deg, #0284C7 0%, #0369A1 100%);
  border: 1px solid #38BDF8;
  color: #FFFFFF;
  border-bottom-right-radius: 2px;
}

.chat-bubble.agent {
  align-self: flex-start;
  background: #0B2444;
  border: 1px solid var(--border-color);
  color: #E2E8F0;
  border-bottom-left-radius: 2px;
}

.chat-bubble .speaker-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 8px;
  padding: 4px 10px;
  font-size: 11px;
  border-radius: 12px;
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid var(--success-green);
  color: var(--accent-mint);
  cursor: pointer;
}

/* Toast */
.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #0B203B;
  border: 1.5px solid var(--accent-sky);
  color: #FFFFFF;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  font-weight: 600;
  display: none;
  z-index: 1000;
}

/* Responsive */
@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .form-row {
    flex-direction: column;
    align-items: stretch;
  }
  .tab-btn {
    font-size: 12.5px;
    padding: 10px 8px;
  }
}