/* ==========================================
   FitPro — Global Styles
   Dark Athletic Theme
   ========================================== */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:ital,wght@0,400;0,600;0,700;0,800;0,900;1,700&family=Barlow:wght@300;400;500;600&display=swap');

/* ---- CSS Variables ---- */
:root {
  --green:     #00FF87;
  --green-dim: #00cc6a;
  --dark:      #0a0a0a;
  --dark2:     #111111;
  --dark3:     #1a1a1a;
  --dark4:     #222222;
  --card:      #161616;
  --border:    #2a2a2a;
  --text:      #e8e8e8;
  --text-muted:#888;
  --red:       #ff4444;
  --yellow:    #FFD700;
  --font-head: 'Barlow Condensed', sans-serif;
  --font-body: 'Barlow', sans-serif;
  --radius:    12px;
  --shadow:    0 8px 32px rgba(0,0,0,0.5);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--dark);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: var(--green); text-decoration: none; transition: color .2s; }
a:hover { color: var(--green-dim); }

img { max-width: 100%; height: auto; display: block; }

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

/* ==========================================
   NAVBAR
   ========================================== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5%;
  height: 70px;
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 900;
  color: var(--green);
  letter-spacing: -1px;
  text-transform: uppercase;
}
.nav-logo span { color: #fff; }

.nav-links {
  display: flex; align-items: center; gap: 32px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--green); }

.nav-actions { display: flex; align-items: center; gap: 12px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 24px;
  border: none; border-radius: 6px;
  font-family: var(--font-head);
  font-size: 1rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  cursor: pointer; transition: all .2s;
}

.btn-green {
  background: var(--green); color: #000;
}
.btn-green:hover { background: var(--green-dim); color: #000; transform: translateY(-2px); }

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

.btn-red { background: var(--red); color: #fff; }
.btn-red:hover { background: #cc0000; transform: translateY(-2px); }

.btn-sm { padding: 7px 16px; font-size: .85rem; }
.btn-lg { padding: 14px 36px; font-size: 1.2rem; }

/* Hamburger */
.nav-toggle {
  display: none; background: none; border: none;
  cursor: pointer; padding: 4px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text); margin: 5px 0; transition: .3s;
}

/* ==========================================
   PAGE LAYOUT
   ========================================== */
.page-wrapper { padding-top: 70px; min-height: 100vh; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

.section-title {
  font-family: var(--font-head);
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 900;
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: 8px;
}

.section-title .accent { color: var(--green); }

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 48px;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  background:
    radial-gradient(ellipse 80% 50% at 70% 60%, rgba(0,255,135,0.07) 0%, transparent 70%),
    var(--dark);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: 'FITPRO';
  position: absolute;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 30vw;
  color: rgba(255,255,255,0.02);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  white-space: nowrap;
  z-index: 0;
}

.hero-content { position: relative; z-index: 1; max-width: 680px; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0,255,135,0.1);
  border: 1px solid rgba(0,255,135,0.3);
  color: var(--green);
  padding: 6px 16px; border-radius: 100px;
  font-size: .85rem; font-weight: 600; letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-head);
  font-size: clamp(4rem, 9vw, 7rem);
  font-weight: 900;
  text-transform: uppercase;
  line-height: .95;
  margin-bottom: 24px;
}
.hero-title .line2 { color: var(--green); }

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 40px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  display: flex; gap: 48px; margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.stat-num {
  font-family: var(--font-head);
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--green);
}
.stat-label {
  font-size: .85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ==========================================
   CARDS
   ========================================== */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,255,135,0.3);
  box-shadow: 0 16px 48px rgba(0,255,135,0.08);
}

.card-img {
  width: 100%; height: 220px;
  object-fit: cover;
  background: var(--dark3);
}

.card-img-placeholder {
  width: 100%; height: 220px;
  background: var(--dark3);
  display: flex; align-items: center; justify-content: center;
  font-size: 4rem;
}

.card-body { padding: 20px; }

.card-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }

.tag {
  padding: 3px 10px;
  border-radius: 4px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.tag-green  { background: rgba(0,255,135,.12); color: var(--green); }
.tag-yellow { background: rgba(255,215,0,.12); color: var(--yellow); }
.tag-red    { background: rgba(255,68,68,.12);  color: var(--red); }
.tag-blue   { background: rgba(100,149,237,.12); color: #6495ED; }

.card-title {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: var(--text);
  line-height: 1.1;
}

.card-meta {
  display: flex; gap: 16px;
  font-size: .85rem; color: var(--text-muted);
  margin-bottom: 12px;
}
.card-meta span { display: flex; align-items: center; gap: 4px; }

.card-desc {
  font-size: .9rem; color: var(--text-muted);
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px;
  border-top: 1px solid var(--border);
}

/* Nutrition badges */
.nutrition-row {
  display: flex; gap: 12px;
  margin-bottom: 16px;
}
.nutrition-item {
  flex: 1; text-align: center;
  background: var(--dark3);
  padding: 8px 4px; border-radius: 8px;
}
.nutrition-item .val {
  font-family: var(--font-head);
  font-size: 1.2rem; font-weight: 700;
  color: var(--green);
}
.nutrition-item .lbl {
  font-size: .7rem; color: var(--text-muted);
  text-transform: uppercase;
}

/* ==========================================
   SEARCH & FILTER BAR
   ========================================== */
.filter-bar {
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 32px;
  display: flex; gap: 16px; flex-wrap: wrap; align-items: center;
}

.search-input {
  flex: 1; min-width: 200px;
  background: var(--dark3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color .2s;
}
.search-input:focus { outline: none; border-color: var(--green); }
.search-input::placeholder { color: var(--text-muted); }

.filter-select {
  background: var(--dark3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: .95rem;
  cursor: pointer;
  transition: border-color .2s;
}
.filter-select:focus { outline: none; border-color: var(--green); }

/* ==========================================
   PAGE HERO BANNER
   ========================================== */
.page-hero {
  background:
    linear-gradient(135deg, rgba(0,255,135,0.06) 0%, transparent 60%),
    var(--dark2);
  border-bottom: 1px solid var(--border);
  padding: 60px 0 48px;
  text-align: center;
}

/* ==========================================
   DETAIL PAGE
   ========================================== */
.detail-hero {
  position: relative; overflow: hidden;
  background: var(--dark2);
  border-bottom: 1px solid var(--border);
}

.detail-hero-img {
  width: 100%; height: 420px; object-fit: cover;
  opacity: 0.6;
}

.detail-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to right, rgba(0,0,0,0.9) 40%, transparent 100%);
  display: flex; align-items: flex-end;
  padding: 48px 5%;
}

.detail-content { padding: 48px 0; }

.instructions-block {
  background: var(--dark2);
  border: 1px solid var(--border);
  border-left: 4px solid var(--green);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
}

.instructions-block h3 {
  font-family: var(--font-head);
  font-size: 1.3rem; font-weight: 700;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 16px;
}

.instructions-block p,
.instructions-block ul { white-space: pre-line; color: var(--text-muted); }

/* Video embed */
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
}
.video-wrapper iframe {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  border: none;
}

/* ==========================================
   CALCULATOR
   ========================================== */
.calc-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  max-width: 600px;
  margin: 0 auto;
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-family: var(--font-head);
  font-size: 1rem; font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  background: var(--dark3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color .2s;
}
.form-control:focus { outline: none; border-color: var(--green); }

.result-box {
  background: linear-gradient(135deg, rgba(0,255,135,0.1), rgba(0,255,135,0.03));
  border: 1px solid rgba(0,255,135,0.3);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
  margin-top: 32px;
}

.bmi-number {
  font-family: var(--font-head);
  font-size: 5rem; font-weight: 900;
  color: var(--green); line-height: 1;
  margin-bottom: 8px;
}

.bmi-category {
  font-family: var(--font-head);
  font-size: 1.8rem; font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.bmi-bar-container {
  background: var(--dark3);
  height: 12px; border-radius: 6px;
  position: relative; overflow: hidden;
  margin: 20px 0;
}
.bmi-bar-fill {
  height: 100%; border-radius: 6px;
  transition: width 1s ease;
}

/* ==========================================
   AUTH PAGES
   ========================================== */
.auth-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background:
    radial-gradient(ellipse 60% 80% at 0% 50%, rgba(0,255,135,0.06) 0%, transparent 60%),
    var(--dark);
  padding: 40px 24px;
}

.auth-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px 40px;
  width: 100%; max-width: 480px;
  box-shadow: var(--shadow);
}

.auth-logo {
  text-align: center;
  font-family: var(--font-head);
  font-size: 2.5rem; font-weight: 900;
  color: var(--green);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.auth-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 36px;
}

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

/* ==========================================
   FLASH MESSAGES
   ========================================== */
.flash {
  padding: 14px 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-weight: 500;
  display: flex; align-items: center; gap: 10px;
}
.flash-success { background: rgba(0,255,135,.1); border: 1px solid rgba(0,255,135,.3); color: var(--green); }
.flash-error   { background: rgba(255,68,68,.1);  border: 1px solid rgba(255,68,68,.3);  color: var(--red); }
.flash-info    { background: rgba(100,149,237,.1); border: 1px solid rgba(100,149,237,.3); color: #6495ED; }

/* ==========================================
   ADMIN
   ========================================== */
.admin-layout { display: flex; min-height: 100vh; }

.admin-sidebar {
  width: 260px; flex-shrink: 0;
  background: var(--dark2);
  border-right: 1px solid var(--border);
  padding: 24px 0;
  position: fixed; top: 0; left: 0; bottom: 0;
  overflow-y: auto;
}

.admin-main {
  margin-left: 260px;
  flex: 1; padding: 32px;
  min-height: 100vh;
}

.admin-logo {
  padding: 16px 24px 24px;
  font-family: var(--font-head);
  font-size: 1.6rem; font-weight: 900;
  color: var(--green);
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.admin-nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 24px;
  color: var(--text-muted);
  font-weight: 500; font-size: .95rem;
  transition: all .2s;
  cursor: pointer;
}
.admin-nav-item:hover, .admin-nav-item.active {
  background: rgba(0,255,135,.07);
  color: var(--green);
  border-right: 3px solid var(--green);
}

.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; margin-bottom: 32px; }

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}
.stat-card .stat-icon { font-size: 2.5rem; margin-bottom: 12px; }
.stat-card .stat-val  {
  font-family: var(--font-head);
  font-size: 2.5rem; font-weight: 900; color: var(--green);
}
.stat-card .stat-lbl  { color: var(--text-muted); font-size: .9rem; }

.admin-table {
  width: 100%; border-collapse: collapse;
  background: var(--card);
  border-radius: 12px; overflow: hidden;
  border: 1px solid var(--border);
}
.admin-table th {
  background: var(--dark3);
  padding: 14px 16px;
  font-family: var(--font-head);
  font-size: .95rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .5px;
  color: var(--text-muted);
  text-align: left;
}
.admin-table td { padding: 12px 16px; border-top: 1px solid var(--border); }
.admin-table tr:hover td { background: rgba(255,255,255,.02); }

/* ==========================================
   FOOTER
   ========================================== */
footer {
  background: var(--dark2);
  border-top: 1px solid var(--border);
  padding: 60px 0 24px;
}

.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 48px;
}

.footer-logo {
  font-family: var(--font-head);
  font-size: 2.2rem; font-weight: 900;
  color: var(--green); margin-bottom: 16px;
}

.footer-col h4 {
  font-family: var(--font-head);
  font-size: 1rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--text); margin-bottom: 16px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--text-muted); font-size: .95rem; }
.footer-col ul li a:hover { color: var(--green); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex; align-items: center; justify-content: space-between;
  color: var(--text-muted); font-size: .9rem;
}

/* ==========================================
   PROFILE
   ========================================== */
.profile-header {
  background: var(--dark2);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
}
.profile-avatar {
  width: 100px; height: 100px;
  border-radius: 50%; object-fit: cover;
  border: 3px solid var(--green);
  background: var(--dark3);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem;
  overflow: hidden;
}

/* ==========================================
   UTILITY
   ========================================== */
.text-green  { color: var(--green); }
.text-muted  { color: var(--text-muted); }
.text-center { text-align: center; }
.text-right  { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 48px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.hidden { display: none; }
.w-full { width: 100%; }

/* No results */
.no-results {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
}
.no-results .emoji { font-size: 4rem; margin-bottom: 16px; }
.no-results h3 {
  font-family: var(--font-head);
  font-size: 1.8rem; text-transform: uppercase;
  margin-bottom: 8px; color: var(--text);
}

/* Pagination */
.pagination {
  display: flex; justify-content: center; gap: 8px;
  margin-top: 40px;
}
.page-link {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-weight: 600; transition: all .2s;
}
.page-link:hover, .page-link.active {
  background: var(--green); color: #000;
  border-color: var(--green);
}

/* Responsive */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 768px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 70px; left: 0; right: 0;
    background: var(--dark2);
    border-bottom: 1px solid var(--border);
    padding: 20px;
    gap: 16px;
  }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .auth-card { padding: 32px 24px; }
  .form-row { grid-template-columns: 1fr; }
  .admin-sidebar { display: none; }
  .admin-main { margin-left: 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .filter-bar { flex-direction: column; }
}