/* ═══════════════════════════════════════════
   506Solutions Admin — Design System
   ═══════════════════════════════════════════ */

:root {
    --bg-primary: #0B0F19;
    --bg-secondary: #111827;
    --bg-card: #1A2035;
    --bg-input: #131A2B;
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --accent: #FFB703;
    --accent-hover: #E5A503;
    --accent-glow: rgba(255, 183, 3, 0.15);
    --green: #22C55E;
    --green-bg: rgba(34, 197, 94, 0.12);
    --orange: #F59E0B;
    --orange-bg: rgba(245, 158, 11, 0.12);
    --red: #EF4444;
    --red-bg: rgba(239, 68, 68, 0.12);
    --blue: #3B82F6;
    --blue-bg: rgba(59, 130, 246, 0.12);
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    --radius: 12px;
    --radius-sm: 8px;
    --sidebar-w: 260px;
    --transition: 0.2s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', -apple-system, sans-serif; background: var(--bg-primary); color: var(--text-primary); min-height: 100vh; }
.screen { display: none; }
.screen.active { display: flex; }

/* ═══════════════════════════════════════════
   LOGIN
   ═══════════════════════════════════════════ */
.login-wrapper {
    width: 100%; min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    background: radial-gradient(ellipse at top, #1A2035 0%, #0B0F19 70%);
    padding: 20px;
}
.login-card {
    width: 100%; max-width: 400px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 40px;
}
.login-brand {
    text-align: center; margin-bottom: 36px;
}
.login-logo {
    width: 56px; height: 56px; border-radius: 14px; margin-bottom: 16px; object-fit: contain;
}
.login-brand h1 {
    font-size: 28px; font-weight: 800; letter-spacing: -0.03em;
}
.login-brand h1 span { color: var(--accent); }
.login-brand p { color: var(--text-muted); font-size: 14px; margin-top: 4px; }

.input-group { margin-bottom: 20px; }
.input-group label {
    display: block; font-size: 13px; font-weight: 500; color: var(--text-secondary);
    margin-bottom: 6px;
}
.label-hint { font-weight: 400; color: var(--text-muted); }
.input-icon {
    position: relative;
    width: 100%;
    display: block;
}
.input-icon svg {
    position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
    color: var(--text-muted); pointer-events: none;
}
.input-icon input { padding-left: 42px; }

/* Password wrapper with eye toggle */
.pwd-wrap {
    position: relative;
    width: 100%;
    display: block;
}
.pwd-wrap input {
    padding-right: 44px !important;
}
.pwd-wrap .pwd-eye {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    padding: 0;
    transition: color 0.15s, background 0.15s;
    z-index: 5;
}
.pwd-wrap .pwd-eye:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.06);
}
.pwd-wrap .pwd-eye:focus { outline: none; }
.pwd-wrap .pwd-eye svg { width: 18px; height: 18px; pointer-events: none; }

input[type="text"], input[type="email"], input[type="password"],
input[type="number"], input[type="tel"], input[type="url"], textarea, .select-input {
    width: 100%; padding: 11px 14px;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-size: 14px; font-family: inherit; transition: border var(--transition);
}
input:focus, textarea:focus, .select-input:focus {
    outline: none; border-color: var(--accent);
}
input::placeholder, textarea::placeholder { color: var(--text-muted); }
.select-input { cursor: pointer; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 12px center;
    padding-right: 36px;
}
.select-input option { background: var(--bg-secondary); color: var(--text-primary); }
textarea { resize: vertical; min-height: 100px; }

.btn-login {
    width: 100%; padding: 13px;
    background: var(--accent); color: #000; font-weight: 700;
    border: none; border-radius: var(--radius-sm); font-size: 15px;
    cursor: pointer; transition: all var(--transition);
}
.btn-login:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 6px 20px var(--accent-glow); }
.btn-login:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.login-error {
    color: var(--red); font-size: 13px; text-align: center;
    margin-top: 16px; display: none;
}
.login-error.show { display: block; }

/* ═══════════════════════════════════════════
   SIDEBAR
   ═══════════════════════════════════════════ */
#dashboardScreen { display: none; height: 100vh; }
#dashboardScreen.active { display: flex; }

.sidebar {
    width: var(--sidebar-w); height: 100vh; position: fixed; left: 0; top: 0;
    background: var(--bg-secondary); border-right: 1px solid var(--border);
    display: flex; flex-direction: column; z-index: 50;
}
.sidebar-brand {
    padding: 24px 20px; display: flex; align-items: center; gap: 12px;
    border-bottom: 1px solid var(--border); font-size: 17px; letter-spacing: -0.02em;
}
.sidebar-brand strong { color: var(--accent); }
.sidebar-logo { width: 34px; height: 34px; border-radius: 8px; object-fit: contain; }

.sidebar-nav { flex: 1; padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; }
.nav-item {
    display: flex; align-items: center; gap: 12px; padding: 11px 14px;
    background: transparent; border: none; color: var(--text-secondary);
    font-size: 14px; font-weight: 500; font-family: inherit;
    border-radius: var(--radius-sm); cursor: pointer; transition: all var(--transition);
    text-align: left; width: 100%;
}
.nav-item:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.nav-item.active {
    background: var(--accent-glow); color: var(--accent);
}
.nav-item.active svg { stroke: var(--accent); }

.sidebar-footer {
    padding: 16px 12px; border-top: 1px solid var(--border);
    display: flex; align-items: center; gap: 10px;
}
.sidebar-user { flex: 1; display: flex; align-items: center; gap: 10px; min-width: 0; }
.user-avatar {
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--accent); color: #000; font-weight: 700; font-size: 14px;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.user-info { display: flex; flex-direction: column; min-width: 0; }
.user-email { font-size: 12px; color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-role { font-size: 11px; color: var(--text-muted); }

.btn-icon {
    width: 36px; height: 36px; border-radius: var(--radius-sm);
    background: transparent; border: 1px solid var(--border);
    color: var(--text-secondary); cursor: pointer; display: flex;
    align-items: center; justify-content: center; transition: all var(--transition); flex-shrink: 0;
}
.btn-icon:hover { background: rgba(255,255,255,0.06); color: var(--text-primary); border-color: var(--border-hover); }

/* ═══════════════════════════════════════════
   MAIN CONTENT
   ═══════════════════════════════════════════ */
.main-content {
    margin-left: var(--sidebar-w); flex: 1; padding: 32px 40px;
    overflow-y: auto; height: 100vh;
}
.tab-content { display: none; }
.tab-content.active { display: block; }

.page-header {
    display: flex; justify-content: space-between; align-items: flex-start;
    margin-bottom: 28px;
}
.page-header h1 { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; }
.page-subtitle { color: var(--text-muted); font-size: 14px; margin-top: 4px; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 18px; border-radius: var(--radius-sm);
    font-size: 13px; font-weight: 600; font-family: inherit;
    cursor: pointer; transition: all var(--transition); border: none;
}
.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 4px 16px var(--accent-glow); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-outline {
    background: transparent; color: var(--text-secondary);
    border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--border-hover); color: var(--text-primary); background: rgba(255,255,255,0.04); }
.btn-ghost { background: transparent; color: var(--text-secondary); border: none; }
.btn-ghost:hover { color: var(--text-primary); }
.btn-sm { padding: 7px 14px; font-size: 12px; }
.btn-danger { background: var(--red-bg); color: var(--red); border: 1px solid rgba(239,68,68,0.2); }
.btn-danger:hover { background: rgba(239,68,68,0.2); }
.btn-success { background: var(--green-bg); color: var(--green); border: 1px solid rgba(34,197,94,0.2); }
.btn-success:hover { background: rgba(34,197,94,0.2); }

/* Stats */
.stats-row { display: grid; grid-template-columns: repeat(3, 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;
}
.stat-icon {
    width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
}
.stat-icon.total { background: var(--blue-bg); color: var(--blue); }
.stat-icon.active { background: var(--green-bg); color: var(--green); }
.stat-icon.pending { background: var(--orange-bg); color: var(--orange); }
.stat-data { display: flex; flex-direction: column; }
.stat-value { font-size: 28px; font-weight: 700; line-height: 1; }
.stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* Toolbar */
.toolbar { display: flex; gap: 12px; margin-bottom: 20px; }
.search-input {
    flex: 1; position: relative;
}
.search-input svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-muted); pointer-events: none; }
.search-input input { padding-left: 40px; }

/* Card / Table */
.card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden;
}
.table { width: 100%; border-collapse: collapse; }
.table thead { background: rgba(0,0,0,0.2); }
.table th {
    padding: 14px 18px; text-align: left;
    font-size: 12px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.05em; color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}
.table td {
    padding: 14px 18px; font-size: 14px; color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}
.table tbody tr { transition: background var(--transition); }
.table tbody tr:hover { background: rgba(255,255,255,0.02); }
.table code {
    background: rgba(255,255,255,0.06); padding: 3px 8px;
    border-radius: 4px; font-size: 13px; color: var(--text-primary);
}

.badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 5px 12px; border-radius: 20px;
    font-size: 12px; font-weight: 600;
}
.badge::before {
    content: ''; width: 6px; height: 6px; border-radius: 50%;
}
.badge.active { background: var(--green-bg); color: var(--green); }
.badge.active::before { background: var(--green); }
.badge.pending { background: var(--orange-bg); color: var(--orange); }
.badge.pending::before { background: var(--orange); }
.badge.inactive { background: var(--red-bg); color: var(--red); }
.badge.inactive::before { background: var(--red); }

.empty-state, .loading-state {
    padding: 64px 20px; text-align: center; display: none;
}
.empty-state.show, .loading-state.show { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.empty-state p { color: var(--text-secondary); font-size: 15px; font-weight: 500; }
.empty-sub { color: var(--text-muted); font-size: 13px; }

.loader {
    width: 32px; height: 32px; border: 3px solid var(--border);
    border-top-color: var(--accent); border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════════════════════════════════
   PLANS GRID
   ═══════════════════════════════════════════ */
.plans-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 20px;
}
.plan-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px; position: relative;
    transition: all var(--transition);
}
.plan-card:hover { border-color: var(--border-hover); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,0.3); }
.plan-card.popular { border-color: var(--accent); }

.plan-badge {
    position: absolute; top: 16px; right: 16px;
    background: var(--accent); color: #000; padding: 4px 10px;
    border-radius: 6px; font-size: 11px; font-weight: 700; text-transform: uppercase;
}
.plan-header { margin-bottom: 16px; }
.plan-name { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.plan-price { display: flex; align-items: baseline; gap: 4px; }
.plan-price .amount { font-size: 36px; font-weight: 800; color: var(--accent); }
.plan-price .period { font-size: 14px; color: var(--text-muted); }

.plan-meta {
    display: flex; gap: 16px; padding: 12px 0;
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
    margin-bottom: 16px; font-size: 13px; color: var(--text-secondary);
}
.plan-features { list-style: none; margin-bottom: 20px; }
.plan-features li {
    padding: 6px 0; font-size: 14px; color: var(--text-secondary);
    display: flex; align-items: center; gap: 8px;
}
.plan-features li::before {
    content: ''; width: 18px; height: 18px; border-radius: 50%;
    background: var(--green-bg); flex-shrink: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%2322C55E' stroke-width='3' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: center;
}
.plan-actions { display: flex; gap: 8px; }
.plan-actions .btn { flex: 1; justify-content: center; }

/* ═══════════════════════════════════════════
   CONFIG
   ═══════════════════════════════════════════ */
.config-sections { display: flex; flex-direction: column; gap: 20px; }
.config-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden;
}
.config-card-header {
    display: flex; align-items: center; gap: 16px;
    padding: 20px 24px; border-bottom: 1px solid var(--border);
}
.config-card-icon {
    width: 44px; height: 44px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.config-card-header h3 { font-size: 16px; font-weight: 600; margin-bottom: 2px; }
.config-card-header p { font-size: 13px; color: var(--text-muted); }
.config-card-body { padding: 20px 24px; display: flex; flex-direction: column; gap: 16px; }
.config-field { display: flex; flex-direction: column; gap: 6px; }
.config-field label { font-size: 13px; font-weight: 500; color: var(--text-secondary); }
.config-field .input-icon svg { top: 50%; }

/* ═══════════════════════════════════════════
   MODAL
   ═══════════════════════════════════════════ */
.modal-backdrop {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
    z-index: 200; align-items: center; justify-content: center; padding: 20px;
}
.modal-backdrop.show { display: flex; }

.modal {
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: 16px; width: 100%; max-width: 520px;
    max-height: 90vh; overflow-y: auto; padding: 28px;
}
.modal-head {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 24px;
}
.modal-head h2 { font-size: 20px; font-weight: 700; }

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

.modal-actions {
    display: flex; justify-content: flex-end; gap: 10px;
    margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border);
}

/* Toggle Switch */
.toggle-label {
    display: flex; align-items: center; gap: 10px; cursor: pointer;
    font-size: 14px; color: var(--text-secondary); padding-top: 28px;
}
.toggle-check { display: none; }
.toggle-switch {
    width: 40px; height: 22px; border-radius: 11px;
    background: var(--border); position: relative; transition: background var(--transition);
    flex-shrink: 0;
}
.toggle-switch::after {
    content: ''; position: absolute; left: 3px; top: 3px;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--text-muted); transition: all var(--transition);
}
.toggle-check:checked + .toggle-switch { background: var(--accent); }
.toggle-check:checked + .toggle-switch::after { left: 21px; background: #000; }

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 900px) {
    .sidebar { width: 72px; }
    .sidebar-brand span, .nav-item span, .sidebar-user .user-info { display: none; }
    .sidebar-brand { justify-content: center; padding: 20px 8px; }
    .nav-item { justify-content: center; padding: 12px; }
    .sidebar-footer { justify-content: center; padding: 12px 8px; }
    .sidebar-user { justify-content: center; }
    .main-content { margin-left: 72px; padding: 24px 20px; }
    .stats-row { grid-template-columns: 1fr; }
    .toolbar { flex-direction: column; }
    .form-grid { grid-template-columns: 1fr; }
    .page-header { flex-direction: column; gap: 16px; }
}

@media (max-width: 600px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; }
}