/* ==========================================
   Irunica Email Sender - Dashboard Styles
   Clean, modern design inspired by Streamlit
   ========================================== */

:root {
    /* Color Palette - Warm coral & teal accent */
    --primary: #FF6B6B;
    --primary-dark: #EE5A5A;
    --secondary: #4ECDC4;
    --secondary-dark: #3DBDB5;
    --danger: #FF4757;
    --success: #2ED573;
    --warning: #FFA502;
    --smartlead: #7C3AED;
    --smartlead-dark: #6D28D9;
    
    /* Neutrals */
    --bg-dark: #1A1D29;
    --bg-card: #242838;
    --bg-input: #2D3348;
    --text-primary: #F8F9FA;
    --text-secondary: #A0A6B8;
    --text-muted: #6B7280;
    --border: #3D4359;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.25);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'IBM Plex Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    margin-bottom: var(--spacing-lg);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-buttons {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.btn-refresh {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: white;
    box-shadow: 0 4px 12px rgba(78, 205, 196, 0.3);
}

.btn-refresh:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(78, 205, 196, 0.4);
}

.btn-refresh.spinning {
    pointer-events: none;
}

.btn-refresh.spinning::before {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: var(--spacing-xs);
}

/* Tab Navigation */
.tab-nav {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xs);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.tab-btn.active {
    color: var(--text-primary);
    background: var(--bg-input);
    box-shadow: var(--shadow-sm);
}

.tab-btn[data-tab="direct"].active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.tab-btn[data-tab="smartlead"].active {
    background: linear-gradient(135deg, var(--smartlead), var(--smartlead-dark));
    color: white;
}

.tab-icon {
    font-size: 1.25rem;
}

.tab-text {
    display: inline;
}

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 12px rgba(255, 107, 107, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
}

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-card);
    border-color: var(--secondary);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #FF3344);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 71, 87, 0.4);
}

.btn-smartlead {
    background: linear-gradient(135deg, var(--smartlead), var(--smartlead-dark));
    color: white;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

.btn-smartlead:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

/* Main Content */
.main {
    flex: 1;
}

/* Sections */
section {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

section h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border);
}

/* Status Cards */
.status-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    transition: transform 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
}

.card-icon {
    font-size: 2rem;
}

.card-content {
    display: flex;
    flex-direction: column;
}

.card-value {
    font-size: 1.75rem;
    font-weight: 600;
    line-height: 1.2;
}

.card-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.card-pending .card-value {
    color: var(--warning);
}

.card-completed .card-value {
    color: var(--success);
}

.card-today .card-value {
    color: var(--secondary);
}

/* Accounts Table */
.accounts-table-container {
    overflow-x: auto;
}

.accounts-table {
    width: 100%;
    border-collapse: collapse;
}

.accounts-table th,
.accounts-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.accounts-table th {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.accounts-table td {
    font-size: 0.9rem;
}

.accounts-table tbody tr:hover {
    background: var(--bg-input);
}

.accounts-table .loading {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-lg);
}

.status-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge.available {
    background: rgba(46, 213, 115, 0.15);
    color: var(--success);
}

.status-badge.exhausted {
    background: rgba(255, 71, 87, 0.15);
    color: var(--danger);
}

/* Settings */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.setting-item label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.slider-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.slider-container input[type="range"] {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-input);
    appearance: none;
    outline: none;
}

.slider-container input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--secondary);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(78, 205, 196, 0.4);
    transition: transform 0.2s ease;
}

.slider-container input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.slider-value {
    min-width: 50px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--secondary);
    text-align: right;
}

/* Form Elements */
.settings-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-input {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--smartlead);
}

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

.form-hint {
    padding: var(--spacing-md);
    background: rgba(124, 58, 237, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-left: 3px solid var(--smartlead);
}

.form-hint code {
    background: var(--bg-input);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SF Mono', 'Consolas', monospace;
    color: var(--smartlead);
}

/* Info Box */
.info-box {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-input);
    border-radius: var(--radius-md);
}

.info-box p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.info-box strong {
    color: var(--text-primary);
}

/* Controls */
.controls-section {
    background: transparent;
    padding: 0;
    box-shadow: none;
}

.controls-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.sending-status {
    margin-top: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: var(--bg-input);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    min-width: 80px;
    text-align: right;
}

/* Logs */
.logs-container {
    background: var(--bg-input);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    max-height: 300px;
    overflow-y: auto;
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 0.85rem;
}

.logs-container::-webkit-scrollbar {
    width: 6px;
}

.logs-container::-webkit-scrollbar-track {
    background: transparent;
}

.logs-container::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.log-entry {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.log-entry:last-child {
    border-bottom: none;
}

.log-entry.success {
    color: var(--success);
}

.log-entry.error {
    color: var(--danger);
}

.log-entry.warning {
    color: var(--warning);
}

.log-entry.info {
    color: var(--secondary);
}

.log-entry.smartlead {
    color: var(--smartlead);
}

.log-empty {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-lg);
}

/* Footer */
.footer {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .header h1 {
        font-size: 1.5rem;
    }
    
    .tab-nav {
        flex-direction: column;
    }
    
    .tab-btn {
        justify-content: flex-start;
    }
    
    .controls-buttons {
        flex-direction: column;
    }
    
    .btn-large {
        width: 100%;
        justify-content: center;
    }
}

/* Animations */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.sending .card-today {
    animation: pulse 1.5s infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.btn.loading::before {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: var(--spacing-xs);
}