/* AI FITNESS - Premium CSS */
:root {
  --primary: #00c896;
  --primary-dark: #00a07a;
  --secondary: #7c3aed;
  --accent: #f59e0b;
  --danger: #ef4444;
  --dark: #0f172a;
  --dark2: #1e293b;
  --dark3: #334155;
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --card-bg: rgba(30, 41, 59, 0.85);
  --border: rgba(148, 163, 184, 0.15);
  --radius: 16px;
  --shadow: 0 20px 60px rgba(0,0,0,0.4);
}

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

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--dark);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated background */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: 
    radial-gradient(ellipse at 10% 20%, rgba(0,200,150,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 90% 80%, rgba(124,58,237,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(245,158,11,0.03) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Typography */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.1; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 600; }

/* Gradient text */
.gradient-text {
  background: linear-gradient(135deg, #00c896, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 2rem;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 1.4rem;
  font-weight: 800;
}

.logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, #00c896, #7c3aed);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.nav-links { display: flex; align-items: center; gap: 1.5rem; }
.nav-links a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; transition: color .2s; }
.nav-links a:hover { color: var(--primary); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .2s;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #00c896, #00a07a);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0,200,150,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,200,150,0.4); }

.btn-secondary {
  background: rgba(124,58,237,0.15);
  color: #a78bfa;
  border: 1px solid rgba(124,58,237,0.3);
}
.btn-secondary:hover { background: rgba(124,58,237,0.25); transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover { background: rgba(255,255,255,0.05); }

.btn-danger {
  background: rgba(239,68,68,0.15);
  color: #f87171;
  border: 1px solid rgba(239,68,68,0.3);
}

.btn-google {
  background: #fff;
  color: #333;
  border: 1px solid #ddd;
  width: 100%;
  justify-content: center;
  padding: 12px;
  font-size: 0.95rem;
}
.btn-google:hover { background: #f8f8f8; transform: translateY(-1px); }

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  transition: transform .2s, box-shadow .2s;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,200,150,0.5), transparent);
}

.card:hover { transform: translateY(-4px); box-shadow: 0 20px 40px rgba(0,0,0,0.3); }

.card-glass {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 1.5rem;
  backdrop-filter: blur(20px);
}

/* Form elements */
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 6px; font-weight: 500; }

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color .2s, box-shadow .2s;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,200,150,0.15);
  background: rgba(0,200,150,0.05);
}
.form-control option { background: var(--dark2); }

select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 100px; }

/* Grid */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.grid-tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }

/* Dashboard layout */
.dashboard-wrapper {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
  padding-top: 70px;
}

.sidebar {
  position: fixed;
  top: 70px;
  left: 0;
  width: 260px;
  height: calc(100vh - 70px);
  background: rgba(15, 23, 42, 0.95);
  border-right: 1px solid var(--border);
  padding: 1.5rem 1rem;
  overflow-y: auto;
  z-index: 50;
  backdrop-filter: blur(10px);
}

.sidebar-menu { list-style: none; }
.sidebar-menu li { margin-bottom: 4px; }
.sidebar-menu a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all .2s;
}
.sidebar-menu a:hover, .sidebar-menu a.active {
  background: rgba(0,200,150,0.1);
  color: var(--primary);
}
.sidebar-menu a .icon { font-size: 18px; width: 22px; text-align: center; }

.sidebar-section-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  padding: 1rem 14px 0.5rem;
  font-weight: 600;
}

.main-content { margin-left: 260px; padding: 2rem; }

/* Stats cards */
.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  backdrop-filter: blur(10px);
}

.stat-icon {
  width: 50px; height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.stat-icon.green { background: rgba(0,200,150,0.15); }
.stat-icon.purple { background: rgba(124,58,237,0.15); }
.stat-icon.amber { background: rgba(245,158,11,0.15); }
.stat-icon.blue { background: rgba(59,130,246,0.15); }

.stat-value { font-size: 1.8rem; font-weight: 800; line-height: 1; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; }

/* Tool cards */
.tool-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  cursor: pointer;
  transition: all .3s;
  text-decoration: none;
  color: var(--text);
  display: block;
  position: relative;
  overflow: hidden;
}

.tool-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s;
}

.tool-card:hover { transform: translateY(-6px); border-color: rgba(0,200,150,0.3); }
.tool-card:hover::after { transform: scaleX(1); }

.tool-icon {
  width: 54px; height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 1rem;
}

.tool-title { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.tool-desc { font-size: 0.82rem; color: var(--text-muted); line-height: 1.5; }
.token-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(245,158,11,0.15);
  color: #fbbf24;
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: 20px;
  padding: 3px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 10px;
}

/* AI result box */
.ai-result {
  background: rgba(0,200,150,0.05);
  border: 1px solid rgba(0,200,150,0.2);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-top: 1.5rem;
  white-space: pre-wrap;
  font-size: 0.9rem;
  line-height: 1.8;
  animation: fadeIn .5s ease;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-success { background: rgba(0,200,150,0.15); color: #00c896; }
.badge-warning { background: rgba(245,158,11,0.15); color: #f59e0b; }
.badge-danger { background: rgba(239,68,68,0.15); color: #ef4444; }
.badge-info { background: rgba(59,130,246,0.15); color: #60a5fa; }

/* Token display */
.token-display {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #fbbf24;
}

/* Progress bar */
.progress-bar {
  height: 6px;
  background: var(--dark3);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #00c896, #7c3aed);
  border-radius: 3px;
  transition: width .5s ease;
}

/* Table */
.table-wrapper { overflow-x: auto; border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; }
thead th {
  background: rgba(0,200,150,0.08);
  padding: 12px 16px;
  text-align: left;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  font-weight: 600;
}
tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
tbody tr:hover { background: rgba(255,255,255,0.02); }

/* Avatar */
.avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00c896, #7c3aed);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  overflow: hidden;
  flex-shrink: 0;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }

/* Loading spinner */
.spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Alert */
.alert {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.alert-success { background: rgba(0,200,150,0.1); border: 1px solid rgba(0,200,150,0.3); color: #00c896; }
.alert-error { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); color: #f87171; }
.alert-warning { background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.3); color: #fbbf24; }

/* Image upload area */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 3rem;
  text-align: center;
  cursor: pointer;
  transition: all .3s;
}
.upload-area:hover, .upload-area.dragover {
  border-color: var(--primary);
  background: rgba(0,200,150,0.05);
}

/* Section title */
.section-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Divider */
.divider { height: 1px; background: var(--border); margin: 1.5rem 0; }
.divider-text {
  text-align: center;
  position: relative;
  margin: 1.5rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.divider-text::before, .divider-text::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 42%;
  height: 1px;
  background: var(--border);
}
.divider-text::before { left: 0; }
.divider-text::after { right: 0; }

/* Page header */
.page-header { margin-bottom: 2rem; }
.page-header h1 { font-size: 1.8rem; font-weight: 800; }
.page-header p { color: var(--text-muted); margin-top: 6px; }

/* Animations */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

.animate-in { animation: fadeIn 0.4s ease forwards; }
.float { animation: float 4s ease-in-out infinite; }

/* Responsive */
@media (max-width: 768px) {
  .dashboard-wrapper { grid-template-columns: 1fr; }
  .sidebar { transform: translateX(-100%); transition: transform .3s; }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; padding: 1rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .navbar { padding: 1rem; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark2); }
::-webkit-scrollbar-thumb { background: var(--dark3); border-radius: 3px; }

/* Login page */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 2.5rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

/* Hero section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 6rem 2rem 4rem;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,200,150,0.1);
  border: 1px solid rgba(0,200,150,0.3);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: 0.85rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
  animation: fadeIn 0.5s ease;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.w-100 { width: 100%; }
.hidden { display: none !important; }