/* ===== VARIABLES ===== */
:root {
  --bg: #0d1117;
  --bg-alt: #161b22;
  --bg-card: #1c2128;
  --bg-card-hover: #21262d;
  --accent: #2563eb;
  --accent-light: #3b82f6;
  --accent-glow: rgba(37, 99, 235, 0.2);
  --cyan: #06b6d4;
  --green: #3fb950;
  --red: #f85149;
  --yellow: #d29922;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --border: #30363d;
  --border-light: #21262d;
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
  --sidebar-w: 260px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html { scroll-behavior: smooth; }

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

a { text-decoration: none; color: inherit; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ===== FORMS ===== */
.form-input, .form-textarea, .form-select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  padding: 10px 14px;
  transition: border-color var(--transition);
  outline: none;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-textarea { resize: vertical; min-height: 100px; line-height: 1.6; }

.form-select { cursor: pointer; }
.form-select option { background: var(--bg-alt); }

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

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-hint { font-size: 0.78rem; color: var(--text-muted); }

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

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  font-family: var(--font);
  white-space: nowrap;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover:not(:disabled) { background: var(--accent-light); border-color: var(--accent-light); box-shadow: 0 4px 16px rgba(37,99,235,0.35); }

.btn-outline { background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline:hover:not(:disabled) { border-color: var(--accent); color: var(--accent-light); }

.btn-danger { background: transparent; color: var(--red); border-color: rgba(248, 81, 73, 0.3); }
.btn-danger:hover:not(:disabled) { background: rgba(248, 81, 73, 0.1); }

.btn-success { background: rgba(63, 185, 80, 0.1); color: var(--green); border-color: rgba(63, 185, 80, 0.3); }
.btn-success:hover:not(:disabled) { background: rgba(63, 185, 80, 0.2); }

.btn-ghost { background: transparent; color: var(--text-muted); border-color: transparent; }
.btn-ghost:hover:not(:disabled) { color: var(--text); background: var(--bg-card-hover); }

.btn-icon {
  width: 36px; height: 36px; padding: 0;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.btn-sm { padding: 7px 14px; font-size: 0.82rem; }

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

/* ===== SIDEBAR ===== */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-alt);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  overflow-y: auto;
  z-index: 100;
  transition: transform var(--transition);
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-brand {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text);
}

.sidebar-brand span { color: var(--accent); }

.sidebar-close {
  display: none;
  background: none; border: none; cursor: pointer;
  color: var(--text-muted); font-size: 1rem;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-section-title {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 12px 8px 4px;
  margin-top: 8px;
}

.nav-section-title:first-child { margin-top: 0; }

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.sidebar-link:hover { color: var(--text); background: var(--bg-card); }
.sidebar-link.active { color: var(--accent-light); background: rgba(37, 99, 235, 0.1); }
.sidebar-link i { width: 18px; text-align: center; font-size: 0.9rem; }

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius);
  background: var(--bg-card);
}

.sidebar-user-avatar {
  width: 34px; height: 34px;
  background: rgba(37, 99, 235, 0.15);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent-light); font-size: 0.9rem;
  flex-shrink: 0;
}

.sidebar-user-info small {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.sidebar-user-info strong {
  font-size: 0.82rem;
  display: block;
}

/* ===== MAIN ===== */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ===== TOPBAR ===== */
.topbar {
  height: 60px;
  background: rgba(13, 17, 23, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-left { display: flex; align-items: center; gap: 12px; }

.sidebar-toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  color: var(--text); font-size: 1.1rem;
}

.topbar-title {
  font-size: 1rem;
  font-weight: 700;
}

.topbar-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.topbar-right { display: flex; align-items: center; gap: 8px; }

/* ===== CONTENT AREA ===== */
.content-area {
  padding: 28px;
  flex: 1;
}

.page-section { display: none; }
.page-section.active { display: block; animation: fadeIn 0.3s ease; }

/* ===== PANEL HEADER ===== */
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.panel-title {
  font-size: 1.2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-title i { color: var(--accent); }

/* ===== CARDS ===== */
.edit-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.edit-card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.edit-card-title {
  font-size: 0.92rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

.edit-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ===== LIST ITEMS ===== */
.items-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.list-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}

.list-item:hover { border-color: rgba(37, 99, 235, 0.4); }

.list-item-header {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.list-item-toggle { transition: transform var(--transition); color: var(--text-muted); font-size: 0.8rem; }
.list-item-toggle.open { transform: rotate(180deg); }

.list-item-title { font-weight: 600; font-size: 0.92rem; flex: 1; }
.list-item-meta { font-size: 0.78rem; color: var(--text-muted); font-family: var(--font-mono); }

.list-item-actions { display: flex; gap: 6px; margin-left: auto; }

.list-item-body {
  padding: 0 16px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.list-item-body.open {
  max-height: 1000px;
  padding: 0 16px 16px;
}

.list-item-body .form-group { margin-bottom: 12px; }
.list-item-body .form-group:last-child { margin-bottom: 0; }

/* ===== UPLOAD ZONE ===== */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.upload-zone:hover, .upload-zone.dragging {
  border-color: var(--accent);
  background: rgba(37, 99, 235, 0.04);
}

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

.upload-icon { font-size: 2rem; color: var(--text-muted); margin-bottom: 10px; }
.upload-text { font-size: 0.9rem; color: var(--text-muted); }
.upload-text strong { color: var(--accent-light); }
.upload-hint { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; }

.upload-file-info {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.85rem;
}

.upload-file-info i { color: var(--accent-light); font-size: 1.1rem; }
.upload-file-name { flex: 1; font-weight: 500; }

/* ===== SKILLS ADMIN ===== */
.skills-admin { display: flex; flex-direction: column; gap: 16px; }

.category-admin {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.category-admin-header {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.category-admin-header input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.92rem;
  font-weight: 600;
  outline: none;
}

.category-skills { padding: 12px; display: flex; flex-direction: column; gap: 8px; }

.skill-admin-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.skill-admin-row input[type="text"] {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.88rem;
  outline: none;
}

.category-add-skill {
  padding: 0 12px 12px;
}

/* ===== TOAST ===== */
.toast-container {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 360px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  animation: slideIn 0.3s ease;
  cursor: pointer;
}

.toast.success { border-left: 3px solid var(--green); }
.toast.error { border-left: 3px solid var(--red); }
.toast.info { border-left: 3px solid var(--accent); }

.toast i { margin-top: 2px; }
.toast.success i { color: var(--green); }
.toast.error i { color: var(--red); }
.toast.info i { color: var(--accent-light); }

.toast-msg { font-size: 0.88rem; line-height: 1.4; }
.toast-title { font-weight: 600; margin-bottom: 2px; }
.toast-sub { color: var(--text-muted); font-size: 0.82rem; }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  animation: fadeIn 0.2s ease;
  backdrop-filter: blur(4px);
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%; max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  animation: slideUp 0.3s ease;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}

.modal-title { font-size: 1.05rem; font-weight: 700; }

.modal-close {
  background: none; border: none; cursor: pointer;
  color: var(--text-muted); font-size: 1.1rem; transition: color 0.2s;
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
}
.modal-close:hover { color: var(--text); background: var(--bg-card-hover); }

.modal-body { padding: 24px; display: flex; flex-direction: column; gap: 16px; }

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: 10px;
}

/* ===== PHOTO PREVIEW ===== */
.photo-preview {
  width: 100px; height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border);
  display: none;
}

.photo-placeholder {
  width: 100px; height: 100px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px dashed var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: var(--text-muted);
}

/* ===== STATS / DASHBOARD ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

.stat-card:hover { border-color: rgba(37, 99, 235, 0.4); }

.stat-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.stat-icon.blue { background: rgba(37, 99, 235, 0.15); color: var(--accent-light); }
.stat-icon.cyan { background: rgba(6, 182, 212, 0.15); color: var(--cyan); }
.stat-icon.green { background: rgba(63, 185, 80, 0.15); color: var(--green); }
.stat-icon.yellow { background: rgba(210, 153, 34, 0.15); color: var(--yellow); }

.stat-info strong { display: block; font-size: 1.5rem; font-weight: 700; }
.stat-info span { font-size: 0.82rem; color: var(--text-muted); }

/* ===== TABS ===== */
.icon-select {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 12px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.icon-option {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: var(--transition);
  font-size: 0.9rem;
}

.icon-option:hover { border-color: var(--accent); color: var(--accent-light); }
.icon-option.selected { border-color: var(--accent); color: var(--accent-light); background: rgba(37, 99, 235, 0.1); }

/* ===== ANIMATIONS ===== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-close { display: flex; }
  .sidebar-toggle { display: flex; }
  .main-content { margin-left: 0; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .content-area { padding: 16px; }
  .topbar { padding: 0 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .panel-header { flex-direction: column; align-items: flex-start; }
}