/* ===================================
   Admin Dashboard - CSS Styles
   =================================== */

/* CSS Custom Properties */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --bg-input: #0d0d12;

    --color-primary: #00d9ff;
    --color-primary-rgb: 0, 217, 255;
    --color-secondary: #7c3aed;
    --color-success: #10b981;
    --color-danger: #ef4444;

    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(0, 217, 255, 0.5);

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    --sidebar-width: 260px;
    --header-height: 70px;

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;

    --transition: 250ms ease;
}

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

body {
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

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

button {
    font-family: inherit;
    cursor: pointer;
}

input,
textarea {
    font-family: inherit;
}

.hidden {
    display: none !important;
}

/* ===================================
   LOGIN SCREEN
   =================================== */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: radial-gradient(ellipse at top, #1a1a2e 0%, var(--bg-primary) 50%);
}

.login-card {
    width: 100%;
    max-width: 400px;
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header .logo-icon {
    font-size: 48px;
    color: var(--color-primary);
    display: block;
    margin-bottom: 16px;
}

.login-header h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.login-hint {
    text-align: center;
    margin-top: 20px;
    font-size: 12px;
    color: var(--text-muted);
}

.error-message {
    color: var(--color-danger);
    font-size: 13px;
    text-align: center;
    min-height: 20px;
}

/* ===================================
   FORM ELEMENTS
   =================================== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    transition: all var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(var(--color-primary-rgb), 0.3);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-ghost:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.btn-full {
    width: 100%;
}

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

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header .logo-icon {
    font-size: 24px;
    color: var(--color-primary);
}

.sidebar-header .logo-text {
    font-size: 18px;
    font-weight: 700;
}

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

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-size: 14px;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(var(--color-primary-rgb), 0.1);
    color: var(--color-primary);
}

.nav-item.logout {
    color: var(--color-danger);
}

.nav-item.logout:hover {
    background: rgba(239, 68, 68, 0.1);
}

.sidebar-footer {
    padding: 16px 12px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

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

.content-header {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 50;
}

.header-title h1 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.header-title p {
    font-size: 13px;
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    gap: 12px;
}

.content-body {
    flex: 1;
    padding: 32px;
    max-width: 800px;
}

/* Edit Sections */
.edit-section {
    display: none;
}

.edit-section.active {
    display: block;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}

.card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.card .form-group+.form-group {
    margin-top: 16px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* Form Row - side by side */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 16px;
}

.form-row:first-child {
    margin-top: 0;
}

.form-row+.form-group {
    margin-top: 16px;
}

/* ===================================
   TOAST NOTIFICATION
   =================================== */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 16px 24px;
    background: var(--color-success);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 500;
    transform: translateY(100px);
    opacity: 0;
    transition: all var(--transition);
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.error {
    background: var(--color-danger);
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .content-header {
        padding: 16px;
    }

    .content-body {
        padding: 16px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .header-actions {
        flex-direction: column;
    }
}