/* ==============================================
   SHARED ADMIN PANEL STYLES
   Common styles used across all admin pages
   ============================================== */

:root {
    /* Admin Color Palette */
    --admin-primary: #4CAF50;
    --admin-secondary: #2196F3;
    --admin-accent: #FF9800;
    --admin-danger: #F44336;
    --admin-success: #4CAF50;
    --admin-warning: #FFA500;
    --admin-info: #2196F3;

    /* Background Colors */
    --admin-bg: #f5f7fa;
    --admin-card-bg: #ffffff;
    --admin-nav-bg: #2c3e50;

    /* Text Colors */
    --admin-text: #2c3e50;
    --admin-text-light: #6c757d;
    --admin-text-muted: #95a5a6;

    /* Border & Shadow */
    --admin-border: #e1e8ed;
    --admin-border-light: #f0f3f5;
    --admin-shadow: 0 2px 8px rgba(0,0,0,0.1);
    --admin-shadow-hover: 0 4px 12px rgba(0,0,0,0.15);

    /* Spacing */
    --admin-spacing-xs: 0.5rem;
    --admin-spacing-sm: 0.75rem;
    --admin-spacing-md: 1rem;
    --admin-spacing-lg: 1.5rem;
    --admin-spacing-xl: 2rem;

    /* Border Radius */
    --admin-radius-sm: 4px;
    --admin-radius-md: 8px;
    --admin-radius-lg: 12px;

    /* Transitions */
    --admin-transition: all 0.2s ease;
}

/* ==============================================
   NAVIGATION (Shared across all admin pages)
   ============================================== */

.nav {
    background: #FFFFFF;
    border-bottom: 1px solid #E2E8F0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.nav-logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.nav-title {
    color: #2C5282;
    font-weight: 600;
    font-size: 1.1rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-link {
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: #2D3748;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.3s ease;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.nav-link:hover {
    background: #E2E8F0;
    color: #2C5282;
}

.nav-link.active {
    background: #2C5282;
    color: white;
}

.back-to-site {
    background: #FFAB02;
    color: white !important;
    font-weight: 600;
}

.back-to-site:hover {
    background: #E69500;
}

.auth-nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    color: #E53E3E;
    text-decoration: none;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.auth-nav-link:hover {
    background: rgba(229, 62, 62, 0.1);
}

@media (max-width: 480px) {
    .auth-nav-label {
        display: none;
    }
}

/* Groups theme-toggle + mobile-toggle on the right side of the nav */
.nav-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Mobile Toggle - hidden by default */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-toggle span {
    width: 100%;
    height: 3px;
    background: #2C5282;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Show hamburger when 5+ features purchased (desktop) */
.nav-container.has-many-features .mobile-toggle {
    display: flex;
}

@media (min-width: 769px) {
    .nav-container.has-many-features .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        border-top: 1px solid #E2E8F0;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        flex-direction: column;
        padding: 1rem 0;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
    }

    .nav-container.has-many-features .nav-links.active {
        transform: translateX(0);
    }

    .nav-container.has-many-features .nav-link {
        width: 100%;
        text-align: center;
        padding: 1rem;
        border-radius: 0;
    }
}

/* Mobile: always show hamburger, collapse nav to drawer */
@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        border-top: 1px solid #E2E8F0;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        flex-direction: column;
        padding: 1rem 0;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: 1rem;
        border-radius: 0;
    }
}

/* ==============================================
   LOADING STATE (Shared across all admin pages)
   ============================================== */

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    gap: 1rem;
    padding: 2rem;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--admin-border);
    border-top-color: var(--admin-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-state p {
    color: var(--admin-text-light);
    font-size: 0.9rem;
}

/* ==============================================
   COMMON LAYOUT
   ============================================== */

.admin-main, .admin-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.admin-header {
    margin-bottom: 2rem;
}

.admin-header h1 {
    margin: 0 0 0.5rem 0;
    color: var(--admin-text);
    font-size: 2rem;
}

.admin-header p {
    margin: 0;
    color: var(--admin-text-light);
    font-size: 1rem;
}

/* ==============================================
   COMMON CARDS & SECTIONS
   ============================================== */

.admin-section {
    background: var(--admin-card-bg);
    border-radius: var(--admin-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--admin-shadow);
    margin-bottom: 1.5rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-header h3 {
    margin: 0;
    color: var(--admin-text);
    font-size: 1.25rem;
}

/* ==============================================
   COMMON BUTTONS
   ============================================== */

.btn, .btn-primary, .btn-secondary, .btn-danger, .btn-success, .btn-warning {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--admin-radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--admin-transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--admin-primary);
    color: white;
}

.btn-primary:hover {
    background: #45a049;
    transform: translateY(-1px);
    box-shadow: var(--admin-shadow-hover);
}

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

.btn-secondary:hover {
    background: var(--admin-bg);
}

.btn-danger {
    background: var(--admin-danger);
    color: white;
}

.btn-danger:hover {
    background: #d32f2f;
}

.btn-success {
    background: var(--admin-success);
    color: white;
}

.btn-warning {
    background: var(--admin-warning);
    color: white;
}

/* ==============================================
   COMMON FORM CONTROLS
   ============================================== */

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-md);
    font-size: 1rem;
    transition: var(--admin-transition);
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--admin-text);
    font-weight: 500;
    font-size: 0.9rem;
}

/* ==============================================
   COMMON MODALS
   ============================================== */

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
}

.modal-content {
    background: var(--admin-card-bg);
    border-radius: var(--admin-radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--admin-border);
}

.modal-header h2, .modal-header h3 {
    margin: 0;
    color: var(--admin-text);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--admin-border);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    background: var(--admin-bg);
}

.close-btn, .close-modal {
    background: none;
    border: none;
    font-size: 1.75rem;
    cursor: pointer;
    color: var(--admin-text-light);
    line-height: 1;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--admin-radius-sm);
    transition: var(--admin-transition);
}

.close-btn:hover, .close-modal:hover {
    background: var(--admin-bg);
    color: var(--admin-text);
}

/* ==============================================
   COMMON NOTIFICATIONS
   ============================================== */

.notification {
    position: fixed;
    top: 80px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: var(--admin-radius-md);
    box-shadow: var(--admin-shadow-hover);
    z-index: 10000;
    max-width: 350px;
    animation: slideInRight 0.3s ease;
}

.notification-success {
    background: var(--admin-success);
    color: white;
}

.notification-error {
    background: var(--admin-danger);
    color: white;
}

.notification-warning {
    background: var(--admin-warning);
    color: white;
}

.notification-info {
    background: var(--admin-info);
    color: white;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==============================================
   COMMON EMPTY STATES
   ============================================== */

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.empty-state h3 {
    color: var(--admin-text);
    margin: 0 0 0.5rem 0;
}

.empty-state p {
    color: var(--admin-text-light);
    max-width: 400px;
    margin: 0 auto 1.5rem;
}

/* ==============================================
   COMMON BADGES
   ============================================== */

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--admin-radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-primary {
    background: rgba(76, 175, 80, 0.1);
    color: var(--admin-primary);
}

.badge-success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--admin-success);
}

.badge-danger {
    background: rgba(244, 67, 54, 0.1);
    color: var(--admin-danger);
}

.badge-warning {
    background: rgba(255, 152, 0, 0.1);
    color: var(--admin-warning);
}

.badge-info {
    background: rgba(33, 150, 243, 0.1);
    color: var(--admin-info);
}

/* ==============================================
   UTILITY CLASSES
   ============================================== */

.mt-1 { margin-top: var(--admin-spacing-xs); }
.mt-2 { margin-top: var(--admin-spacing-md); }
.mt-3 { margin-top: var(--admin-spacing-lg); }

.mb-1 { margin-bottom: var(--admin-spacing-xs); }
.mb-2 { margin-bottom: var(--admin-spacing-md); }
.mb-3 { margin-bottom: var(--admin-spacing-lg); }

.text-center { text-align: center; }
.text-muted { color: var(--admin-text-muted); }

.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.gap-1 { gap: var(--admin-spacing-xs); }
.gap-2 { gap: var(--admin-spacing-md); }

/* ==============================================
   RESPONSIVE UTILITIES
   ============================================== */

@media (max-width: 768px) {
    .admin-main, .admin-container {
        padding: 1rem 0.75rem;
    }

    .admin-header h1 {
        font-size: 1.5rem;
    }

    .admin-section {
        padding: 1rem;
    }
}