/* platform/_layout.css — platform admin shell */

*, *::before, *::after { box-sizing: border-box; }

:root {
  --ink:            #0E1F2D;
  --navy:           #16384A;
  --accent:         #6366F1;
  --accent-deep:    #4F46E5;
  --paper:          #F5F7F9;
  --white:          #FFFFFF;
  --mist:           #D1DBE3;
  --text-secondary: #6B7F8C;
  --sidebar-bg:     #1A1F36;
  --radius-sm:      6px;
  --radius-md:      10px;
  --radius-lg:      14px;
  --shadow-card:    0 1px 3px rgba(14,31,45,0.06), 0 4px 12px rgba(14,31,45,0.06);
  --font-body:      "Inter", system-ui, -apple-system, sans-serif;
  --font-display:   "Inter", system-ui, -apple-system, sans-serif;
  --sidebar-w:      224px;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ===================================================================
   Flash messages
   =================================================================== */
.flash-stack {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 380px;
}

.flash {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 13.5px;
  font-weight: 500;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  word-break: break-word;
}
.flash--success { background: #1A7A30; color: #fff; }
.flash--danger  { background: #D9534F; color: #fff; }
.flash--warning { background: #E0A23B; color: #fff; }
.flash--info    { background: var(--accent-deep); color: #fff; }

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

.admin-sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  padding: 24px 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  margin-bottom: 14px;
}

.admin-brand .brand-mark {
  width: 20px;
  height: 24px;
  color: var(--accent);
  flex-shrink: 0;
}

.admin-brand .brand-word {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13.5px;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.2px;
}
.admin-brand .brand-word b { font-weight: 800; color: var(--accent); }

.admin-brand-badge {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: rgba(99,102,241,0.7);
  margin-top: 1px;
}

.admin-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 10px;
}

.admin-nav-section {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  padding: 14px 12px 6px;
}

.admin-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 38px;
  padding: 0 12px;
  border-radius: var(--radius-md);
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  transition: background 120ms ease, color 120ms ease;
}
.admin-nav-link .ti { font-size: 17px; }
.admin-nav-link:hover { background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.9); }
.admin-nav-link--active { background: rgba(99,102,241,0.18); color: var(--accent); }

.admin-logout-wrap {
  padding: 14px 10px 0;
  border-top: 1px solid rgba(255,255,255,0.07);
  margin-top: 14px;
}

.admin-logout-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  height: 38px;
  padding: 0 12px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: rgba(255,255,255,0.4);
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: background 120ms ease, color 120ms ease;
}
.admin-logout-btn .ti { font-size: 17px; }
.admin-logout-btn:hover { background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.75); }

/* ===================================================================
   Main content area
   =================================================================== */
.admin-main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
}

.admin-content {
  padding: 40px 32px;
}

/* ===================================================================
   Page header
   =================================================================== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 16px;
}

.page-header-left { flex: 1; min-width: 0; }

.page-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: var(--ink);
  margin: 0 0 4px;
}

.page-sub {
  font-size: 13.5px;
  color: var(--text-secondary);
  margin: 0;
}

/* ===================================================================
   Shared form elements
   =================================================================== */
.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.form-control {
  display: block;
  width: 100%;
  height: 40px;
  padding: 0 12px;
  background: var(--white);
  border: 1.5px solid var(--mist);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--ink);
  outline: none;
  transition: border-color 150ms ease;
}
.form-control:focus { border-color: var(--accent); }
.form-control::placeholder { color: var(--text-secondary); }

.form-hint {
  margin: 5px 0 0;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Select */
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24'%3E%3Cpath fill='%236B7F8C' d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

/* Checkbox row */
.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}
.form-check input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}
.form-check label {
  font-size: 13.5px;
  color: var(--ink);
  cursor: pointer;
}

/* ===================================================================
   Shared card
   =================================================================== */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  margin-bottom: 20px;
}

.card-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--ink);
  margin: 0 0 4px;
}

.card-sub {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0 0 20px;
  line-height: 1.5;
}

/* ===================================================================
   Buttons
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 38px;
  padding: 0 18px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 120ms ease, opacity 120ms ease;
  white-space: nowrap;
}
.btn .ti { font-size: 16px; }

.btn-primary { background: var(--accent); color: var(--white); }
.btn-primary:hover { background: var(--accent-deep); }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid rgba(99,102,241,0.35);
}
.btn-outline:hover { background: rgba(99,102,241,0.07); }

.btn-ghost {
  background: var(--paper);
  color: var(--ink);
  border: 1.5px solid var(--mist);
}
.btn-ghost:hover { background: var(--mist); }

.btn-danger { background: #D9534F; color: var(--white); }
.btn-danger:hover { background: #B52B27; }

.btn-sm { height: 32px; padding: 0 14px; font-size: 12.5px; }