/* ═══════════════════════════════════════════
   CloudBridge — style.css
   ═══════════════════════════════════════════ */

/* ── Variables ───────────────────────────── */
:root {
  --primary:      #4f46e5;
  --primary-dark: #3730a3;
  --primary-light:#ede9fe;
  --danger:       #ef4444;
  --danger-light: #fee2e2;
  --success:      #22c55e;
  --success-light:#dcfce7;
  --warning:      #f59e0b;

  --bg:           #f8fafc;
  --surface:      #ffffff;
  --border:       #e2e8f0;
  --text:         #1e293b;
  --text-muted:   #64748b;
  --sidebar-bg:   #1e1b4b;
  --sidebar-text: #c7d2fe;
  --sidebar-hover:#312e81;

  --radius:   10px;
  --shadow:   0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md:0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.05);
  --sidebar-w:240px;
  --topbar-h: 64px;
}

/* ── Reset ───────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; font-size: 14px;
       color: var(--text); background: var(--bg); line-height: 1.5; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

/* ── Layout ──────────────────────────────── */
.sidebar {
  position: fixed; top: 0; left: 0;
  width: var(--sidebar-w); height: 100vh;
  background: var(--sidebar-bg);
  display: flex; flex-direction: column;
  z-index: 100; overflow-y: auto;
}

.main-content {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  padding: 24px;
  max-width: 1200px;
}

/* ── Sidebar ─────────────────────────────── */
.sidebar-logo {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 16px; border-bottom: 1px solid rgba(255,255,255,.08);
  color: #fff; font-weight: 700; font-size: 1.1rem;
}
.logo-icon { font-size: 1.4rem; }

.sidebar-nav { list-style: none; padding: 12px 0; flex: 1; }
.sidebar-nav li a {
  display: block; padding: 10px 16px;
  color: var(--sidebar-text); border-radius: 8px; margin: 2px 8px;
  transition: background .15s;
}
.sidebar-nav li a:hover,
.sidebar-nav li.active a {
  background: var(--sidebar-hover); color: #fff; text-decoration: none;
}

.sidebar-storage {
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.storage-label { color: var(--sidebar-text); font-size:.75rem; margin-bottom:6px; }
.storage-bar { background: rgba(255,255,255,.12); border-radius:99px; height:5px; }
.storage-fill { background: var(--primary); border-radius:99px; height:5px; transition:.3s; }
.storage-text { color: var(--sidebar-text); font-size:.72rem; margin-top:4px; }

.sidebar-footer {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 16px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.user-badge {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size:.9rem; flex-shrink:0;
}
.user-info { flex: 1; overflow: hidden; }
.user-info strong { display:block; color:#fff; font-size:.82rem; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.user-info small  { color: var(--sidebar-text); font-size:.72rem; }
.logout-btn { color: var(--sidebar-text); font-size: 1rem; padding: 4px; }
.logout-btn:hover { color: #fff; text-decoration:none; }

/* ── Topbar ──────────────────────────────── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px;
}
.topbar h1 { font-size: 1.5rem; font-weight: 700; }

/* ── Cards ───────────────────────────────── */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.card-header h2 { font-size: 1rem; font-weight: 600; }

/* ── Buttons ─────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 8px; font-size: .85rem;
  font-weight: 500; cursor: pointer; border: none;
  transition: all .15s; line-height: 1.4;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); color: var(--text); }
.btn-danger  { background: var(--danger-light); color: var(--danger); border: 1px solid #fca5a5; }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-block   { width: 100%; justify-content: center; padding: 10px; font-size: .95rem; }
.btn-sm      { padding: 4px 10px; font-size: .78rem; border-radius: 6px; }

/* ── Alerts ──────────────────────────────── */
.alert {
  padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: .88rem;
}
.alert-error   { background: var(--danger-light);  color: #b91c1c; border: 1px solid #fca5a5; }
.alert-success { background: var(--success-light); color: #15803d; border: 1px solid #86efac; }

/* ── Forms ───────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 500; margin-bottom: 6px; font-size:.85rem; }
.form-group input[type=text],
.form-group input[type=email],
.form-group input[type=password],
.form-group input[type=number],
.form-group input[type=datetime-local],
.form-group textarea,
.search-input {
  width: 100%; padding: 9px 12px;
  border: 1px solid var(--border); border-radius: 8px;
  font-size: .88rem; color: var(--text); background: var(--bg);
  transition: border-color .15s;
}
.form-group input:focus,
.search-input:focus { outline: none; border-color: var(--primary); }
.form-check { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.form-check input { width: auto; }
.form-row { display: flex; gap: 16px; flex-wrap: wrap; }
.form-row .form-group { flex: 1; min-width: 180px; }

/* ── Tables ──────────────────────────────── */
.table-wrap { overflow-x: auto; }
.file-table { width: 100%; border-collapse: collapse; }
.file-table th,
.file-table td { padding: 10px 20px; text-align: left; border-bottom: 1px solid var(--border); }
.file-table th { font-size: .78rem; text-transform: uppercase; letter-spacing: .05em;
                  color: var(--text-muted); background: var(--bg); font-weight: 600; }
.file-table tr:last-child td { border-bottom: none; }
.file-table tr:hover td { background: #f8f9ff; }
.row-disabled td { opacity: .5; }
.file-icon { margin-right: 6px; }
.file-name { font-weight: 500; }
.file-desc { display: block; color: var(--text-muted); font-size: .78rem; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }
.mt-1 { margin-top: 16px; }

/* ── Badges ──────────────────────────────── */
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 99px;
  font-size: .72rem; font-weight: 600; letter-spacing: .03em;
}
.badge-green { background: var(--success-light); color: #15803d; }
.badge-gray  { background: #f1f5f9; color: var(--text-muted); }
.badge-blue  { background: var(--primary-light); color: var(--primary-dark); }
.badge-red   { background: var(--danger-light); color: var(--danger); }

/* ── Auth pages ──────────────────────────── */
.auth-body {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #e0e7ff 0%, #ede9fe 100%);
}
.auth-card {
  background: var(--surface); border-radius: 16px;
  padding: 36px; width: 100%; max-width: 400px;
  box-shadow: var(--shadow-md);
}
.auth-logo {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 24px; font-size: 1.25rem; font-weight: 700; color: var(--primary);
}
.auth-card h2 { margin-bottom: 20px; font-size: 1.25rem; }
.auth-footer { margin-top: 16px; text-align: center; color: var(--text-muted); font-size: .85rem; }

/* ── Upload drop zone ────────────────────── */
.upload-card { padding: 24px; }
.drop-zone {
  border: 2px dashed var(--border); border-radius: 12px;
  padding: 48px 24px; text-align: center; cursor: pointer;
  transition: all .2s; margin-bottom: 20px; background: var(--bg);
}
.drop-zone.drag-over { border-color: var(--primary); background: var(--primary-light); }
.drop-icon { font-size: 3rem; margin-bottom: 12px; }
.drop-sub  { color: var(--text-muted); margin: 8px 0; }
.drop-limit { font-size: .78rem; color: var(--text-muted); margin-top: 12px; }
.file-preview {
  margin-top: 16px; padding: 12px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; font-size: .85rem;
}
.hidden { display: none !important; }

/* ── Progress ────────────────────────────── */
.progress-wrap { margin: 12px 0; }
.progress-bar  { background: var(--border); border-radius: 99px; height: 8px; margin-bottom: 6px; }
.progress-fill { background: var(--primary); border-radius: 99px; height: 8px;
                  width: 0; transition: width .2s; }

/* ── Activity list ───────────────────────── */
.activity-list { list-style: none; padding: 8px 0; }
.activity-list li {
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
  padding: 8px 20px; border-bottom: 1px solid var(--border); font-size:.85rem;
}
.activity-list li:last-child { border-bottom: none; }
.activity-action { background: var(--primary-light); color: var(--primary); border-radius:4px;
                    padding: 1px 7px; font-size:.75rem; font-weight:600; text-transform:uppercase; }
.activity-file   { color: var(--text-muted); font-style: italic; }
.activity-time   { margin-left: auto; color: var(--text-muted); font-size:.75rem; white-space:nowrap; }

/* ── Stats grid ──────────────────────────── */
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px,1fr));
  gap: 16px; margin-bottom: 24px;
}
.stat-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
  text-align: center; box-shadow: var(--shadow);
}
.stat-icon  { font-size: 1.8rem; margin-bottom: 8px; }
.stat-value { font-size: 1.6rem; font-weight: 700; color: var(--primary); }
.stat-label { font-size: .78rem; color: var(--text-muted); margin-top: 2px; }

/* ── Share page ──────────────────────────── */
.share-file-info {
  display: flex; align-items: center; gap: 16px; padding: 20px;
}
.share-link-form, .share-user-form { padding: 16px 20px; }
.link-input {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 10px; font-size:.8rem;
  width: 300px; max-width: 100%;
}

/* ── Public download ─────────────────────── */
.dl-file-info { text-align: center; padding: 20px 0; }
.dl-file-info h2 { margin: 12px 0 4px; word-break: break-all; }

/* ── Search ──────────────────────────────── */
.search-input { max-width: 240px; padding: 7px 12px; }

/* ── Responsive ──────────────────────────── */
@media (max-width: 768px) {
  .sidebar { width: 100%; height: auto; position: relative; flex-direction: row; flex-wrap: wrap; }
  .main-content { margin-left: 0; padding: 16px; }
  .topbar h1 { font-size: 1.1rem; }
  .sidebar-nav { display: flex; flex-wrap: wrap; padding: 0; }
  .sidebar-nav li a { padding: 8px 12px; margin: 0; border-radius: 0; }
  .sidebar-footer { flex: 1; }
}