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

/* =============================================
   DESIGN TOKENS
============================================= */
:root {
  --green-50:  #f0fdf4;
  --green-100: #dcfce7;
  --green-200: #bbf7d0;
  --green-400: #4ade80;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --green-700: #15803d;
  --green-800: #166534;
  --green-900: #14532d;

  --red-400: #f87171;
  --red-500: #ef4444;
  --red-600: #dc2626;

  --amber-400: #fbbf24;
  --amber-500: #f59e0b;

  --neutral-50:  #fafafa;
  --neutral-100: #f5f5f5;
  --neutral-200: #e5e5e5;
  --neutral-400: #a3a3a3;
  --neutral-600: #525252;
  --neutral-800: #262626;
  --neutral-900: #171717;

  --sidebar-w: 270px;
  --card-radius: 22px;
  --glass: rgba(255,255,255,0.55);
  --glass-border: rgba(255,255,255,0.75);
  --glass-shadow: 0 16px 48px rgba(0,0,0,0.10);
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* =============================================
   GLOBAL RESET
============================================= */
*, *::before, *::after {
  margin: 0; padding: 0;
  box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Outfit', sans-serif;
  display: flex;
  min-height: 100vh;
  background: linear-gradient(145deg, #e8f5e9 0%, #c8e6c9 40%, #a5d6a7 100%);
  background-attachment: fixed;
  color: var(--neutral-800);
  overflow-x: hidden;
}

/* =============================================
   SIDEBAR
============================================= */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-right: 1px solid var(--glass-border);
  padding: 36px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 0;
  box-shadow: 4px 0 32px rgba(0,0,0,0.07);
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 100;
  transition: var(--transition);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  margin-bottom: 44px;
}

.logo-icon { font-size: 28px; }
.logo-text {
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--green-700), var(--green-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.nav-group { flex: 1; display: flex; flex-direction: column; gap: 6px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 14px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  color: var(--neutral-600);
  transition: var(--transition);
  border: 1px solid transparent;
}

.nav-icon { font-size: 18px; }

.nav-item:hover {
  background: rgba(255,255,255,0.7);
  color: var(--green-700);
  transform: translateX(4px);
  border-color: var(--glass-border);
}

.nav-item.active {
  background: rgba(255,255,255,0.85);
  color: var(--green-700);
  font-weight: 600;
  border-color: var(--glass-border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.sidebar-footer { margin-top: auto; padding: 0 12px; }
.badge-ai {
  display: inline-block;
  background: linear-gradient(135deg, var(--green-600), var(--green-800));
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  letter-spacing: 0.5px;
}

/* =============================================
   MOBILE HEADER
============================================= */
.mobile-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 200;
}

.logo-mobile { font-size: 18px; font-weight: 700; color: var(--green-700); }

.hamburger {
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  padding: 0;
}
.hamburger span {
  display: block;
  width: 18px; height: 2px;
  background: var(--green-700);
  border-radius: 2px;
  transition: var(--transition);
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  z-index: 150;
  opacity: 0;
  transition: opacity 0.3s;
}
.sidebar-overlay.visible { display: block; opacity: 1; }

/* =============================================
   MAIN CONTENT
============================================= */
.main {
  flex: 1;
  padding: 50px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: calc(100% - var(--sidebar-w));
}

.page-header {
  width: 100%;
  max-width: 640px;
  text-align: center;
  margin-bottom: 36px;
}

h1 {
  font-size: 40px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--green-800) 0%, var(--green-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
  line-height: 1.1;
}

.page-subtitle {
  margin-top: 10px;
  font-size: 16px;
  color: var(--neutral-600);
  font-weight: 400;
}

/* =============================================
   CARD
============================================= */
.card {
  width: 100%;
  max-width: 640px;
  background: var(--glass);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border-radius: var(--card-radius);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  padding: 36px;
  transition: var(--transition);
}

/* =============================================
   MODEL STATUS
============================================= */
.model-status {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 12px 16px;
  margin-bottom: 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--neutral-600);
}

.status-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-dot.loading {
  background: var(--amber-500);
  animation: pulse 1.2s ease-in-out infinite;
}
.status-dot.ready { background: var(--green-500); }
.status-dot.error { background: var(--red-500); }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* =============================================
   UPLOAD ZONE
============================================= */
.upload-zone {
  position: relative;
  border: 2px dashed rgba(74,222,128,0.5);
  border-radius: 18px;
  background: rgba(255,255,255,0.35);
  transition: var(--transition);
  cursor: pointer;
  margin-bottom: 24px;
  overflow: hidden;
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--green-500);
  background: rgba(255,255,255,0.6);
  transform: scale(1.01);
}
.upload-zone.drag-over { box-shadow: 0 0 0 4px rgba(74,222,128,0.2); }

.upload-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.upload-content {
  padding: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.upload-icon { font-size: 42px; }
.upload-title { font-weight: 600; font-size: 16px; color: var(--neutral-800); }
.upload-subtitle { font-size: 13px; color: var(--neutral-400); }

.preview-container {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 20px;
}
.preview-container img {
  max-width: 100%;
  max-height: 280px;
  border-radius: 12px;
  object-fit: contain;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}
.remove-btn {
  background: rgba(239,68,68,0.1);
  color: var(--red-500);
  border: 1px solid rgba(239,68,68,0.2);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  width: auto;
  box-shadow: none;
}
.remove-btn:hover {
  background: rgba(239,68,68,0.2);
  transform: none;
  box-shadow: none;
}

/* =============================================
   INPUTS & LABELS
============================================= */
.input-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 20px;
  position: relative;
}

.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

label {
  font-size: 14px;
  font-weight: 600;
  color: var(--neutral-700, var(--neutral-800));
  margin-bottom: 8px;
}

input, select {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255,255,255,0.6);
  border: 1.5px solid rgba(255,255,255,0.9);
  border-radius: 12px;
  font-size: 15px;
  font-family: inherit;
  color: var(--neutral-800);
  outline: none;
  transition: var(--transition);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.03);
}

input:focus, select:focus {
  border-color: var(--green-500);
  background: rgba(255,255,255,0.85);
  box-shadow: 0 0 0 3.5px rgba(74,222,128,0.18);
}

select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23525252'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; background-size: 18px; }

.input-unit {
  position: absolute;
  right: 14px;
  bottom: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--neutral-400);
  pointer-events: none;
}

/* =============================================
   BUTTONS
============================================= */
.btn-primary {
  width: 100%;
  padding: 16px 24px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  color: #fff;
  border: none;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(21,128,61,0.3);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  letter-spacing: 0.3px;
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(21,128,61,0.4);
}
.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}
.btn-icon { font-size: 18px; }

.btn-secondary {
  width: 100%;
  padding: 14px 20px;
  background: rgba(255,255,255,0.7);
  color: var(--green-700);
  border: 1.5px solid var(--glass-border);
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.btn-danger {
  padding: 10px 18px;
  background: rgba(239,68,68,0.1);
  color: var(--red-600);
  border: 1px solid rgba(239,68,68,0.2);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
  width: auto;
  box-shadow: none;
}
.btn-danger:hover {
  background: rgba(239,68,68,0.15);
  transform: none;
  box-shadow: none;
}

/* =============================================
   MODE TOGGLE
============================================= */
.mode-toggle {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  background: rgba(255,255,255,0.4);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 6px;
}
.mode-btn {
  flex: 1;
  padding: 12px;
  background: transparent;
  color: var(--neutral-600);
  border: none;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: none;
}
.mode-btn:hover { background: rgba(255,255,255,0.6); transform: none; color: var(--green-700); box-shadow: none; }
.mode-btn.active-mode {
  background: rgba(255,255,255,0.9);
  color: var(--green-700);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

/* =============================================
   WEATHER SECTION
============================================= */
.weather-section { margin-bottom: 24px; }

.weather-card {
  background: rgba(255,255,255,0.5);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 20px;
  margin-top: 14px;
}
.weather-item { font-size: 15px; color: var(--neutral-600); margin-bottom: 14px; }
.weather-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.weather-stat {
  background: rgba(255,255,255,0.6);
  border-radius: 12px;
  padding: 12px;
  text-align: center;
  border: 1px solid var(--glass-border);
}
.stat-label { display: block; font-size: 12px; color: var(--neutral-400); font-weight: 500; margin-bottom: 4px; }
.stat-value { display: block; font-size: 20px; font-weight: 700; color: var(--green-700); }

/* =============================================
   SPINNER
============================================= */
.spinner-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 30px;
  margin-top: 16px;
  color: var(--neutral-600);
  font-weight: 500;
}
.spinner {
  width: 44px; height: 44px;
  border: 4px solid rgba(74,222,128,0.2);
  border-top-color: var(--green-500);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* =============================================
   RESULT CARDS
============================================= */
.result-card {
  margin-top: 28px;
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0,0,0,0.15);
}

.result-card.low-risk {
  background: linear-gradient(135deg, #1a7a4a 0%, #2ecc71 100%);
  color: #fff;
}
.result-card.medium {
  background: linear-gradient(135deg, #b45309 0%, #f59e0b 100%);
  color: #fff;
}
.result-card.high {
  background: linear-gradient(135deg, #991b1b 0%, #ef4444 100%);
  color: #fff;
}
.result-card.healthy {
  background: linear-gradient(135deg, #166534 0%, #22c55e 100%);
  color: #fff;
}

.result-header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px;
}

.result-tag {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0.85;
  margin-bottom: 8px;
}

.result-body h2 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 10px;
}
.result-body p { font-size: 14px; opacity: 0.9; margin-bottom: 6px; }

/* Severity Ring */
.severity-ring {
  flex-shrink: 0;
  width: 96px; height: 96px;
  border-radius: 50%;
  background: conic-gradient(rgba(255,255,255,0.9) var(--pct), rgba(255,255,255,0.2) var(--pct));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  position: relative;
}
.ring-inner {
  width: 72px; height: 72px;
  background: rgba(0,0,0,0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
}

/* Confidence Bar */
.confidence-bar-label { font-size: 13px; opacity: 0.85; margin-bottom: 6px; }
.confidence-bar {
  width: 100%;
  height: 8px;
  background: rgba(255,255,255,0.25);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 4px;
}
.confidence-fill {
  height: 100%;
  background: rgba(255,255,255,0.8);
  border-radius: 999px;
  transition: width 0.8s cubic-bezier(0.4,0,0.2,1);
}

/* Cure Section */
.cure-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(0,0,0,0.1);
  border-top: 1px solid rgba(255,255,255,0.2);
}
.cure-card {
  padding: 20px 24px;
  background: rgba(0,0,0,0.15);
}
.cure-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  opacity: 0.75;
  margin-bottom: 8px;
}
.cure-card p { font-size: 13px; line-height: 1.6; opacity: 0.9; }

.healthy-msg {
  padding: 20px 28px;
  border-top: 1px solid rgba(255,255,255,0.2);
  background: rgba(0,0,0,0.1);
  font-size: 14px;
  opacity: 0.9;
}

.risk-tips {
  padding: 16px 28px;
  background: rgba(0,0,0,0.12);
  border-top: 1px solid rgba(255,255,255,0.2);
  font-size: 14px;
}

/* =============================================
   HISTORY
============================================= */
.history-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.history-count {
  font-size: 15px;
  font-weight: 600;
  color: var(--neutral-600);
}

.history-card {
  background: rgba(255,255,255,0.65);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 20px 24px;
  margin-bottom: 14px;
  transition: var(--transition);
}
.history-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  background: rgba(255,255,255,0.85);
}
.history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  gap: 12px;
  flex-wrap: wrap;
}
.history-badge {
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
}
.badge-disease {
  background: rgba(21,128,61,0.12);
  color: var(--green-700);
}
.badge-risk {
  background: rgba(180,83,9,0.12);
  color: var(--amber-500);
}
.history-date {
  font-size: 12px;
  color: var(--neutral-400);
}
.history-card p { font-size: 14px; color: var(--neutral-600); margin-bottom: 4px; }
.history-card p strong { color: var(--neutral-800); }

.empty-history {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 50px 0;
  color: var(--neutral-400);
}
.empty-icon { font-size: 48px; opacity: 0.5; }

/* =============================================
   TOAST NOTIFICATIONS
============================================= */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(23,23,23,0.92);
  color: #fff;
  padding: 14px 24px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  z-index: 9999;
  white-space: nowrap;
  pointer-events: none;
}
.toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.toast-warning { background: rgba(180,83,9,0.92); }
.toast.toast-error { background: rgba(153,27,27,0.92); }
.toast.toast-success { background: rgba(21,128,61,0.92); }

/* =============================================
   ANIMATIONS
============================================= */
.slide-up {
  animation: slideUp 0.5s cubic-bezier(0.16,1,0.3,1) forwards;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =============================================
   RESPONSIVE
============================================= */
@media (max-width: 900px) {
  body { flex-direction: column; }

  .sidebar {
    position: fixed;
    left: -280px;
    height: 100%;
    z-index: 300;
    transition: left 0.3s cubic-bezier(0.4,0,0.2,1);
  }
  .sidebar.open { left: 0; }

  .mobile-header { display: flex; }

  .main {
    max-width: 100%;
    padding: 30px 20px;
    padding-top: 20px;
  }

  h1 { font-size: 30px; }

  .cure-section { grid-template-columns: 1fr; }

  .result-header { flex-direction: column; text-align: center; }

  .severity-ring { margin: 0 auto; }
}

@media (max-width: 520px) {
  .card { padding: 24px 18px; }
  .input-row { grid-template-columns: 1fr; }
  .history-header { flex-direction: column; align-items: flex-start; }
  .mode-toggle { flex-direction: column; }
  .weather-grid { grid-template-columns: repeat(3,1fr); }
}