:root {
    --navy: #1a3a5c;
    --navy-light: #2a4a6c;
    --navy-dark: #0f2940;
    --success: #66bb6a;
    --error: #ef5350;
    --warning: #ffa726;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Georgia', 'Times New Roman', serif;
    background: linear-gradient(180deg, #000000 0%, rgba(26, 58, 92, 0.02) 100%);
    color: #ffffff;
    min-height: 100vh;
}

/* LOGIN PAGE */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-card {
    background: linear-gradient(135deg, #000000 0%, rgba(26, 58, 92, 0.03) 100%);
    border: 1px solid rgba(26, 58, 92, 0.3);
    padding: 40px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.login-logo {
    width: 150px;
    margin-bottom: 30px;
}

.login-card h1 {
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    margin-bottom: 30px;
    font-family: 'Arial', 'Helvetica', sans-serif;
    text-transform: uppercase;
}

.login-form .form-group {
    margin-bottom: 20px;
    text-align: left;
}

.login-form label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    color: #cccccc;
}

.login-form input {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #000000 0%, rgba(26, 58, 92, 0.01) 100%);
    border: 1px solid rgba(26, 58, 92, 0.2);
    color: #ffffff;
    font-size: 1rem;
    font-family: 'Georgia', 'Times New Roman', serif;
    transition: all 0.3s ease;
}

.login-form input:focus {
    outline: none;
    border-color: var(--navy);
    background: linear-gradient(135deg, #000000 0%, rgba(26, 58, 92, 0.02) 100%);
    box-shadow: 0 0 0 1px rgba(26, 58, 92, 0.3);
}

.login-btn {
    width: 100%;
    padding: 15px 30px;
    background: linear-gradient(135deg, var(--navy) 0%, rgba(26, 58, 92, 0.8) 100%);
    color: #ffffff;
    border: none;
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    font-family: 'Arial', 'Helvetica', sans-serif;
    font-weight: 300;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.login-btn:hover:not(:disabled) {
    background: var(--navy-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.login-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.error-message {
    color: var(--error);
    font-size: 0.9rem;
    margin-top: 15px;
    padding: 10px;
    background: rgba(239, 83, 80, 0.1);
    border: 1px solid rgba(239, 83, 80, 0.3);
}

/* DASHBOARD */
.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 40px;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.98) 0%, rgba(26, 58, 92, 0.02) 100%);
    border-bottom: 1px solid rgba(26, 58, 92, 0.3);
}

.header-logo {
    height: 40px;
}

.admin-header h1 {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    font-family: 'Arial', 'Helvetica', sans-serif;
    text-transform: uppercase;
}

.logout-btn {
    padding: 10px 20px;
    background: rgba(239, 83, 80, 0.2);
    color: #ffffff;
    border: 1px solid rgba(239, 83, 80, 0.5);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-family: 'Arial', 'Helvetica', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background: rgba(239, 83, 80, 0.4);
    transform: translateY(-1px);
}

.dashboard-container {
    display: grid;
    grid-template-columns: 60% 40%;
    gap: 20px;
    padding: 20px 40px;
    max-width: 1600px;
    margin: 0 auto;
}

.panel {
    background: linear-gradient(135deg, #000000 0%, rgba(26, 58, 92, 0.02) 100%);
    border: 1px solid rgba(26, 58, 92, 0.2);
    padding: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.panel-title {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    margin-bottom: 20px;
    font-family: 'Arial', 'Helvetica', sans-serif;
    text-transform: uppercase;
    color: #ffffff;
}

/* FILTER TABS */
.filter-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 8px 16px;
    background: rgba(26, 58, 92, 0.1);
    border: 1px solid rgba(26, 58, 92, 0.3);
    color: #999999;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-family: 'Arial', 'Helvetica', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-tab:hover {
    color: #ffffff;
    border-color: var(--navy);
}

.filter-tab.active {
    background: var(--navy);
    color: #ffffff;
    border-color: var(--navy);
}

/* MESSAGES LIST */
.messages-list {
    max-height: 600px;
    overflow-y: auto;
}

.loading-message {
    text-align: center;
    color: #999999;
    padding: 40px;
}

.message-item {
    padding: 15px;
    border-bottom: 1px solid rgba(26, 58, 92, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
}

.message-item:hover {
    background: rgba(26, 58, 92, 0.05);
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
}

.message-name {
    font-weight: bold;
    color: #ffffff;
}

.message-date {
    font-size: 0.85rem;
    color: #999999;
}

.message-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.message-email {
    font-size: 0.9rem;
    color: #cccccc;
}

.message-status-badge {
    padding: 4px 10px;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 3px;
}

.message-status-badge.unread {
    background: rgba(102, 187, 106, 0.2);
    color: var(--success);
}

.message-status-badge.read {
    background: rgba(100, 100, 100, 0.2);
    color: #999999;
}

.message-status-badge.archived {
    background: rgba(255, 167, 38, 0.2);
    color: var(--warning);
}

.message-subject {
    font-size: 0.95rem;
    color: #ffffff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* MESSAGE DETAIL */
.message-detail {
    margin-top: 20px;
    padding: 20px;
    background: rgba(26, 58, 92, 0.05);
    border: 1px solid rgba(26, 58, 92, 0.3);
}

.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(26, 58, 92, 0.3);
}

.detail-header h3 {
    font-size: 1.2rem;
    font-weight: 300;
    color: #ffffff;
}

.close-detail {
    background: none;
    border: none;
    color: #ffffff;
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    transition: all 0.3s ease;
}

.close-detail:hover {
    color: var(--error);
    transform: rotate(90deg);
}

.detail-from, .detail-date {
    margin-bottom: 10px;
    color: #cccccc;
}

.detail-message {
    margin: 20px 0;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    color: #ffffff;
    line-height: 1.8;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.detail-metadata {
    display: flex;
    gap: 20px;
    margin: 15px 0;
    font-size: 0.85rem;
    color: #999999;
}

.detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
}

.detail-notes {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(26, 58, 92, 0.3);
}

.detail-notes label {
    display: block;
    margin-bottom: 10px;
    color: #cccccc;
}

.detail-notes textarea {
    width: 100%;
    padding: 10px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(26, 58, 92, 0.3);
    color: #ffffff;
    font-family: 'Georgia', 'Times New Roman', serif;
    resize: vertical;
}

/* ACTION BUTTONS */
.action-btn {
    padding: 8px 16px;
    background: rgba(26, 58, 92, 0.2);
    color: #ffffff;
    border: 1px solid rgba(26, 58, 92, 0.4);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-family: 'Arial', 'Helvetica', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.action-btn:hover:not(:disabled) {
    background: rgba(26, 58, 92, 0.4);
    transform: translateY(-1px);
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.action-btn.primary {
    background: linear-gradient(135deg, var(--navy) 0%, rgba(26, 58, 92, 0.8) 100%);
    border-color: var(--navy);
}

.action-btn.primary:hover:not(:disabled) {
    background: var(--navy-light);
}

.action-btn.danger {
    background: rgba(239, 83, 80, 0.2);
    border-color: rgba(239, 83, 80, 0.5);
    color: var(--error);
}

.action-btn.danger:hover:not(:disabled) {
    background: rgba(239, 83, 80, 0.4);
}

.action-btn.warning {
    background: rgba(255, 167, 38, 0.2);
    border-color: rgba(255, 167, 38, 0.5);
    color: var(--warning);
}

.action-btn.warning:hover:not(:disabled) {
    background: rgba(255, 167, 38, 0.4);
}

/* POPUP FORM */
.popup-form .form-row {
    margin-bottom: 20px;
}

.popup-form label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    color: #cccccc;
}

.popup-form input[type="text"],
.popup-form input[type="url"],
.popup-form input[type="datetime-local"],
.popup-form textarea {
    width: 100%;
    padding: 12px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(26, 58, 92, 0.3);
    color: #ffffff;
    font-size: 1rem;
    font-family: 'Georgia', 'Times New Roman', serif;
}

.popup-form input:focus,
.popup-form textarea:focus {
    outline: none;
    border-color: var(--navy);
    box-shadow: 0 0 0 1px rgba(26, 58, 92, 0.5);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.image-upload-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

#popup-image-preview {
    max-width: 100%;
    max-height: 300px;
    border: 1px solid rgba(26, 58, 92, 0.3);
    margin-bottom: 10px;
}

.save-status {
    margin-top: 15px;
    padding: 10px;
    font-size: 0.9rem;
    display: none;
}

.save-status.success {
    display: block;
    color: var(--success);
    background: rgba(102, 187, 106, 0.1);
    border: 1px solid rgba(102, 187, 106, 0.3);
}

.save-status.error {
    display: block;
    color: var(--error);
    background: rgba(239, 83, 80, 0.1);
    border: 1px solid rgba(239, 83, 80, 0.3);
}

/* TOAST NOTIFICATIONS */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 15px 20px;
    background: rgba(0, 0, 0, 0.95);
    border: 1px solid rgba(26, 58, 92, 0.5);
    color: #ffffff;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    animation: slideIn 0.3s ease-out;
    max-width: 350px;
}

.toast.success {
    border-color: var(--success);
    background: rgba(102, 187, 106, 0.2);
}

.toast.error {
    border-color: var(--error);
    background: rgba(239, 83, 80, 0.2);
}

.toast.info {
    border-color: var(--navy);
    background: rgba(26, 58, 92, 0.3);
}

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

/* RESPONSIVE */
@media (max-width: 1024px) {
    .dashboard-container {
        grid-template-columns: 1fr;
    }
    
    .admin-header {
        padding: 15px 20px;
    }
    
    .dashboard-container {
        padding: 15px 20px;
    }
}

@media (max-width: 768px) {
    .admin-header h1 {
        font-size: 1.2rem;
        letter-spacing: 0.1em;
    }
    
    .header-logo {
        height: 30px;
    }
    
    .logout-btn {
        padding: 8px 15px;
        font-size: 0.75rem;
    }
    
    .panel {
        padding: 20px;
    }
    
    .filter-tabs {
        gap: 5px;
    }
    
    .filter-tab {
        padding: 6px 12px;
        font-size: 0.75rem;
    }
    
    .detail-actions {
        flex-direction: column;
    }
    
    .action-btn {
        width: 100%;
    }
    
    .image-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* IMAGE GALLERY */
.gallery-hint-text {
    font-size: 0.8rem;
    color: #666666;
    margin-bottom: 10px;
}

.image-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    max-height: 400px;
    overflow-y: auto;
    padding: 5px;
}

.image-gallery .loading-message {
    grid-column: 1 / -1;
    text-align: center;
    color: #666666;
    padding: 20px;
}

.gallery-empty {
    grid-column: 1 / -1;
    text-align: center;
    color: #666666;
    padding: 20px;
    font-size: 0.9rem;
}

.gallery-thumbnail {
    position: relative;
    aspect-ratio: 1;
    border: 2px solid rgba(26, 58, 92, 0.2);
    cursor: pointer;
    overflow: hidden;
    transition: all 0.3s ease;
}

.gallery-thumbnail:hover {
    border-color: rgba(26, 58, 92, 0.6);
    transform: scale(1.03);
}

.gallery-thumbnail.selected {
    border-color: var(--navy);
    box-shadow: 0 0 0 2px var(--navy), 0 4px 12px rgba(26, 58, 92, 0.4);
}

.gallery-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gallery-selected-badge {
    position: absolute;
    top: 5px;
    left: 5px;
    background: var(--navy);
    color: #ffffff;
    font-size: 0.65rem;
    padding: 3px 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.gallery-delete-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(239, 83, 80, 0.9);
    color: #ffffff;
    border: none;
    width: 24px;
    height: 24px;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
    line-height: 1;
    padding: 0;
}

.gallery-thumbnail:hover .gallery-delete-btn {
    opacity: 1;
}

.gallery-delete-btn:hover {
    background: var(--error);
}