/* =========================================
   CNN Kakao Detection — Cocoa Luxury Theme
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,600;0,700;1,400;1,600&family=DM+Sans:wght@300;400;500;600&display=swap');

/* ── CSS Variables ── */
:root {
  --cocoa-deep:    #1A0E08;
  --cocoa-dark:    #2C1810;
  --cocoa-mid:     #5C3317;
  --cocoa-warm:    #8B5A2B;
  --amber:         #C8891E;
  --amber-light:   #E8A83A;
  --cream:         #F7EDD8;
  --cream-light:   #FDF6EC;
  --forest:        #1E3D0F;
  --sage:          #4A7C2F;
  --sage-light:    #6FA845;
  --rust:          #A63025;
  --text-dark:     #1A0E08;
  --text-mid:      #5C3317;
  --text-light:    #9A7055;
  --shadow-warm:   rgba(44, 24, 16, 0.15);
  --shadow-deep:   rgba(26, 14, 8, 0.35);
  --radius-sm:     8px;
  --radius-md:     16px;
  --radius-lg:     28px;
  --radius-xl:     40px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  font-weight: 400;
  background-color: var(--cream-light);
  color: var(--text-dark);
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(200, 137, 30, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(92, 51, 23, 0.07) 0%, transparent 60%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60'%3E%3Ccircle cx='30' cy='30' r='1' fill='%235C3317' fill-opacity='0.04'/%3E%3C/svg%3E");
}

/* ── Navbar ── */
.navbar {
  background: linear-gradient(135deg, var(--cocoa-deep) 0%, var(--cocoa-dark) 60%, var(--cocoa-mid) 100%) !important;
  border-bottom: 3px solid var(--amber);
  padding: 0.75rem 0;
  box-shadow: 0 4px 24px var(--shadow-deep);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--amber), var(--amber-light), var(--sage-light), var(--amber));
  background-size: 200% 100%;
  animation: shimmer 3s ease infinite;
}

@keyframes shimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.navbar-brand {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.55rem !important;
  font-weight: 700 !important;
  color: var(--cream) !important;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar-brand::before {
  content: '🌱';
  font-size: 1.3rem;
}

.navbar .btn {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-sm);
  transition: all 0.25s ease;
  border: none;
}

.btn-nav-home {
  background: var(--sage) !important;
  color: white !important;
}
.btn-nav-home:hover {
  background: var(--sage-light) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(74, 124, 47, 0.4);
}

.btn-nav-history {
  background: transparent !important;
  color: var(--amber-light) !important;
  border: 1.5px solid var(--amber) !important;
}
.btn-nav-history:hover {
  background: var(--amber) !important;
  color: var(--cocoa-deep) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(200, 137, 30, 0.35);
}

/* ── Page Container ── */
.container.mt-5 {
  max-width: 720px;
  padding-top: 2.5rem !important;
  padding-bottom: 4rem;
  animation: pageIn 0.5s ease both;
}

@keyframes pageIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Cards ── */
.card {
  border: none !important;
  border-radius: var(--radius-lg) !important;
  background: white;
  box-shadow: 0 8px 40px var(--shadow-warm), 0 1px 0 rgba(255,255,255,0.8) inset;
  overflow: hidden;
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--amber), var(--sage-light), var(--amber-light));
}

/* ── Page Title ── */
.page-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--cocoa-dark);
  text-align: center;
  line-height: 1.2;
  margin-bottom: 0.3rem;
}

.page-subtitle {
  font-size: 0.82rem;
  color: var(--text-light);
  text-align: center;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 2rem;
}

/* ── File Upload Zone ── */
.upload-zone {
  border: 2px dashed rgba(92, 51, 23, 0.3);
  border-radius: var(--radius-md);
  padding: 2.5rem 1.5rem;
  text-align: center;
  background: linear-gradient(135deg, var(--cream-light), rgba(247, 237, 216, 0.5));
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.upload-zone:hover {
  border-color: var(--amber);
  background: rgba(200, 137, 30, 0.05);
}

.upload-zone.dragover {
  border-color: var(--sage);
  background: rgba(74, 124, 47, 0.07);
  transform: scale(1.01);
}

.upload-zone .upload-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 0.75rem;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.upload-zone .upload-label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--cocoa-mid);
  display: block;
  margin-bottom: 0.25rem;
}

.upload-zone .upload-hint {
  font-size: 0.78rem;
  color: var(--text-light);
}

.upload-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

/* ── Preview ── */
#preview-container {
  display: none;
  text-align: center;
  margin-top: 1rem;
}

#preview-img {
  max-width: 220px;
  max-height: 220px;
  border-radius: var(--radius-md);
  object-fit: cover;
  box-shadow: 0 8px 24px var(--shadow-warm);
  border: 3px solid var(--cream);
}

#preview-name {
  font-size: 0.78rem;
  color: var(--text-light);
  margin-top: 0.5rem;
}

/* ── Buttons ── */
.btn-predict {
  width: 100%;
  padding: 0.9rem;
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  border: none;
  border-radius: var(--radius-md) !important;
  background: linear-gradient(135deg, var(--sage) 0%, var(--sage-light) 100%);
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 18px rgba(74, 124, 47, 0.35);
  position: relative;
  overflow: hidden;
}

.btn-predict::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 0; height: 0;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.4s ease, height 0.4s ease;
}

.btn-predict:hover::after { width: 400px; height: 400px; }

.btn-predict:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(74, 124, 47, 0.45);
}

.btn-predict:active { transform: translateY(-1px); }

/* ── Result Card ── */
.result-card {
  border-radius: var(--radius-lg) !important;
  background: linear-gradient(135deg, var(--cocoa-dark) 0%, var(--cocoa-mid) 100%);
  color: white;
  padding: 2rem;
  box-shadow: 0 12px 48px var(--shadow-deep);
  animation: resultIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes resultIn {
  from { opacity: 0; transform: scale(0.9) translateY(20px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.result-card::before {
  background: linear-gradient(90deg, var(--amber), var(--amber-light));
}

.result-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 1.25rem;
}

.result-image {
  border-radius: var(--radius-md);
  object-fit: cover;
  max-width: 240px;
  width: 100%;
  display: block;
  margin: 0 auto 1.5rem;
  border: 4px solid rgba(255,255,255,0.15);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.result-badge {
  display: inline-block;
  padding: 0.45rem 1.2rem;
  border-radius: 50px;
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, var(--amber), var(--amber-light));
  color: var(--cocoa-deep);
  box-shadow: 0 4px 14px rgba(200, 137, 30, 0.5);
}

.result-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.stat-box {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  text-align: center;
  backdrop-filter: blur(4px);
}

.stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(247, 237, 216, 0.65);
  font-weight: 600;
  display: block;
  margin-bottom: 0.3rem;
}

.stat-value {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--amber-light);
  line-height: 1;
}

/* ── Confidence Bar ── */
.conf-bar-wrap {
  margin-top: 0.75rem;
}

.conf-bar-bg {
  height: 6px;
  background: rgba(255,255,255,0.1);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 0.4rem;
}

.conf-bar-fill {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--amber), var(--sage-light));
  transition: width 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── History Table ── */
.history-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--cocoa-dark);
}

.history-meta {
  font-size: 0.78rem;
  color: var(--text-light);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.table {
  font-size: 0.875rem;
  color: var(--text-dark);
  border-collapse: separate !important;
  border-spacing: 0 6px !important;
}

.table thead th {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-light);
  border: none !important;
  background: transparent;
  padding-bottom: 0.75rem;
}

.table tbody tr {
  background: white;
  box-shadow: 0 2px 12px var(--shadow-warm);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  animation: rowIn 0.4s ease both;
}

.table tbody tr:hover {
  transform: translateX(4px);
  box-shadow: 4px 4px 20px var(--shadow-warm);
}

@keyframes rowIn {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}

.table tbody tr td {
  border: none !important;
  padding: 0.75rem 1rem;
  vertical-align: middle;
}

.table tbody tr td:first-child {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  color: var(--text-light);
  font-size: 0.78rem;
  font-weight: 600;
}

.table tbody tr td:last-child {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.table-img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: 10px;
  border: 2px solid var(--cream);
  box-shadow: 0 3px 10px var(--shadow-warm);
}

.pred-chip {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  border-radius: 50px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--cocoa-warm), var(--amber));
  color: white;
  letter-spacing: 0.03em;
}

.conf-pill {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--sage);
}

.time-text {
  color: var(--text-light);
  font-size: 0.8rem;
}

.date-text {
  font-size: 0.78rem;
  color: var(--text-light);
}

/* ── Alert ── */
.alert {
  border-radius: var(--radius-md) !important;
  border: none !important;
  font-family: 'DM Sans', sans-serif;
}

.alert-danger {
  background: linear-gradient(135deg, #FFF0EE, #FFE4E0) !important;
  color: var(--rust) !important;
  border-left: 4px solid var(--rust) !important;
  box-shadow: 0 4px 18px rgba(166, 48, 37, 0.12);
}

.alert-danger h3 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

/* ── Divider ── */
.fancy-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 1.5rem 0;
  color: rgba(92, 51, 23, 0.3);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

.fancy-divider::before,
.fancy-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(92, 51, 23, 0.2), transparent);
}

/* ── Loading Spinner ── */
.spinner {
  display: none;
  width: 22px; height: 22px;
  border: 3px solid rgba(255,255,255,0.35);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-right: 8px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-light);
}

.empty-state .empty-icon { font-size: 3rem; margin-bottom: 0.75rem; }

.empty-state p {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.15rem;
  color: var(--text-light);
}

/* ── Utilities ── */
.text-amber { color: var(--amber) !important; }
.text-sage  { color: var(--sage) !important; }

/* ── Responsive ── */
@media (max-width: 576px) {
  .page-title { font-size: 1.6rem; }
  .result-stats { grid-template-columns: 1fr 1fr; }
  .stat-value { font-size: 1.3rem; }
  .result-image { max-width: 180px; }
  .table { font-size: 0.78rem; }
}