/* ============================================
   Variables & Reset
   ============================================ */
:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #6c757d;
    --success: #2ecc71;
    --danger: #e74c3c;
    --warning: #f39c12;
    --info: #3498db;
    --bg: #f0f2f5;
    --card-bg: #ffffff;
    --text: #2c3e50;
    --text-light: #6c757d;
    --border: #dee2e6;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --radius: 12px;
    --transition: all 0.3s ease;
}

.dark-mode {
    --bg: #1a1a2e;
    --card-bg: #16213e;
    --text: #e0e0e0;
    --text-light: #a0a0a0;
    --border: #2a2a4a;
    --shadow: 0 4px 20px rgba(0,0,0,0.3);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    transition: var(--transition);
    min-height: 100vh;
}

/* ============================================
   App Container
   ============================================ */
.app-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 20px;
}

/* ============================================
   Header
   ============================================ */
.app-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 25px 30px;
    border-radius: var(--radius);
    margin-bottom: 25px;
    box-shadow: var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo i {
    font-size: 32px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
}

.subtitle {
    font-size: 14px;
    opacity: 0.9;
}

.subtitle i {
    margin-left: 8px;
}

/* ============================================
   Main Grid
   ============================================ */
.main-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 25px;
}

@media (max-width: 1024px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
    margin-bottom: 20px;
}

.card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card h3 i {
    color: var(--primary);
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar .card:last-child {
    margin-bottom: 0;
}

/* Stats Card */
.stat-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-label {
    color: var(--text-light);
    font-size: 14px;
}

.stat-value {
    font-weight: 600;
}

.status-online {
    color: var(--success);
}

.status-online i {
    font-size: 10px;
    margin-left: 5px;
}

/* Templates Card */
.template-list {
    list-style: none;
    padding: 0;
}

.template-list li {
    padding: 8px 12px;
    margin: 4px 0;
    border-radius: 6px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
}

.template-list li:hover {
    background: var(--bg);
}

.template-list li a {
    color: var(--text);
    text-decoration: none;
    font-size: 14px;
    flex: 1;
}

.template-list li a:hover {
    color: var(--primary);
}

.empty-message {
    color: var(--text-light);
    font-size: 14px;
    padding: 10px 0;
}

/* Tips Card */
.tips-list {
    list-style: none;
    padding: 0;
}

.tips-list li {
    padding: 6px 0;
    font-size: 13px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.tips-list li i {
    color: var(--warning);
}

/* ============================================
   Results
   ============================================ */
.results-card {
    border-right: 4px solid var(--primary);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 15px;
}

.results-summary {
    display: flex;
    gap: 10px;
}

.badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.dark-mode .badge-success {
    background: #1a3a2a;
    color: #8fdfb0;
}

.dark-mode .badge-danger {
    background: #3a1a1a;
    color: #f8a0a0;
}

.results-list {
    max-height: 200px;
    overflow-y: auto;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 12px;
    margin: 4px 0;
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg);
    transition: var(--transition);
}

.result-item.success {
    border-right: 3px solid var(--success);
}

.result-item.error {
    border-right: 3px solid var(--danger);
}

.result-email {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-email i {
    font-size: 16px;
}

.result-item.success .result-email i {
    color: var(--success);
}

.result-item.error .result-email i {
    color: var(--danger);
}

.result-message {
    color: var(--text-light);
    font-size: 13px;
}

/* ============================================
   Form
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 8px;
    color: var(--text);
}

.label-badge {
    background: var(--primary);
    color: white;
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 400;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    background: var(--card-bg);
    color: var(--text);
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 4px rgba(67, 97, 238, 0.1);
}

.form-group textarea {
    resize: vertical;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.6;
    min-height: 200px;
    direction: ltr;
}

.hint {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--text-light);
}

.hint i {
    margin-left: 4px;
}

/* ============================================
   Editor Toolbar
   ============================================ */
.editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 8px;
    padding: 8px;
    background: var(--bg);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.editor-toolbar button {
    padding: 6px 10px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    color: var(--text);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 4px;
}

.editor-toolbar button:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.editor-toolbar .divider {
    width: 1px;
    background: var(--border);
    margin: 0 4px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

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

.btn-secondary:hover {
    background: #5a6268;
}

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

.btn-success:hover {
    background: #27ae60;
}

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

.btn-info:hover {
    background: #2980b9;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

/* ============================================
   Footer
   ============================================ */
.app-footer {
    text-align: center;
    padding: 20px;
    margin-top: 25px;
    color: var(--text-light);
    font-size: 13px;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .app-container {
        padding: 10px;
    }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .logo h1 {
        font-size: 20px;
    }
    
    .subtitle {
        font-size: 13px;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .results-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .result-item {
        flex-direction: column;
        gap: 4px;
    }
    
    .result-message {
        font-size: 12px;
    }
}

/* ============================================
   Scrollbar
   ============================================ */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}