/* SMS Platform Styles - Modern & Clean */

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

:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-box {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 28px;
    margin-bottom: 8px;
    color: var(--text-color);
}

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

/* Header */
.main-header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.header-logo h1 {
    font-size: 20px;
    font-weight: 600;
}

.main-nav {
    display: flex;
    gap: 8px;
}

.nav-item {
    padding: 10px 16px;
    text-decoration: none;
    color: var(--text-muted);
    border-radius: 8px;
    transition: all 0.2s;
    font-size: 14px;
    font-weight: 500;
}

.nav-item:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

.nav-item.active {
    background: var(--primary-color);
    color: white;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.language-selector {
    display: flex;
    gap: 8px;
    align-items: center;
}

.lang-flag {
    font-size: 24px;
    text-decoration: none;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.2s;
    opacity: 0.6;
    cursor: pointer;
}

.lang-flag:hover {
    opacity: 1;
    background: var(--bg-color);
    transform: scale(1.1);
}

.lang-flag.active {
    opacity: 1;
    background: var(--bg-color);
    box-shadow: 0 0 0 2px var(--primary-color);
}

.header-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.username {
    font-size: 14px;
    color: var(--text-muted);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Page Header */
.page-header {
    margin-bottom: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.page-header h1 {
    font-size: 32px;
    margin-bottom: 8px;
}

.page-header p {
    color: var(--text-muted);
    font-size: 16px;
}

/* Filter Card */
.filter-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 32px;
}

.filter-card h3 {
    font-size: 16px;
    margin-bottom: 16px;
    color: var(--text-color);
}

.filter-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* Forms */
.form-card,
.campaigns-table,
.settings-card,
.campaign-details {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 32px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="file"],
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.2s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-hint {
    display: block;
    margin-top: 6px;
    font-size: 13px;
    color: var(--text-muted);
}

.form-hint code {
    background: var(--bg-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
}

.character-counter {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-muted);
}

.sms-count {
    font-weight: 600;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 32px;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

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

.btn-primary:disabled {
    background: var(--secondary-color);
    cursor: not-allowed;
    transform: none;
}

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

.btn-secondary:hover {
    background: #475569;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

/* Tables */
.table-header {
    margin-bottom: 20px;
}

.table-header h2 {
    font-size: 20px;
}

.table-responsive {
    overflow-x: auto;
}

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

table thead {
    background: var(--bg-color);
}

table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

table tbody tr:hover {
    background: var(--bg-color);
}

.action-buttons {
    display: flex;
    gap: 8px;
}

.message-count {
    font-weight: 600;
}

.failed-count {
    color: var(--error-color);
    font-size: 13px;
}

/* Badges */
.badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.badge-success,
.badge-sent {
    background: #d1fae5;
    color: #065f46;
}

.badge-error,
.badge-failed {
    background: #fee2e2;
    color: #991b1b;
}

.badge-pending {
    background: #fef3c7;
    color: #92400e;
}

.badge-completed {
    background: #dbeafe;
    color: #1e40af;
}

.badge-info {
    background: #e0e7ff;
    color: #3730a3;
}

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

/* Preview Section */
.preview-section {
    margin-top: 32px;
    padding: 24px;
    background: var(--bg-color);
    border-radius: 8px;
}

.preview-section h3 {
    margin-bottom: 16px;
    font-size: 18px;
}

.preview-item {
    background: var(--card-bg);
    padding: 12px 16px;
    margin-bottom: 8px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    font-size: 14px;
}

.preview-item strong {
    color: var(--primary-color);
}

/* Progress Bar */
.progress-section {
    margin-top: 32px;
    padding: 24px;
    background: var(--bg-color);
    border-radius: 8px;
}

.progress-bar {
    width: 100%;
    height: 24px;
    background: #e2e8f0;
    border-radius: 12px;
    overflow: hidden;
    margin: 16px 0;
}

.progress-bar.large {
    height: 32px;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 12px;
    color: white;
    font-size: 12px;
    font-weight: 600;
}

.progress-fill.success {
    background: var(--success-color);
}

.progress-stats {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 8px;
}

/* Result Message */
.result-message {
    margin-top: 24px;
    white-space: pre-line;
}

/* CSV Info */
.csv-info {
    padding: 16px;
    background: var(--bg-color);
    border-radius: 8px;
    margin: 16px 0;
    font-size: 14px;
}

/* Stats Page */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--card-bg);
    padding: 32px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-card.success {
    border-top: 4px solid var(--success-color);
}

.stat-card.error {
    border-top: 4px solid var(--error-color);
}

.stat-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stats-detail {
    background: var(--card-bg);
    padding: 32px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
}

.stats-detail h2 {
    margin-bottom: 20px;
}

.stats-percentage {
    font-size: 24px;
    font-weight: 700;
    color: var(--success-color);
    margin-top: 12px;
}

/* Campaign Details */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.detail-item {
    padding: 16px;
    background: var(--bg-color);
    border-radius: 8px;
}

.detail-item label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.detail-item value {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-color);
}

.detail-item value.success {
    color: var(--success-color);
}

.detail-item value.error {
    color: var(--error-color);
}

.messages-table {
    margin-top: 32px;
}

.message-preview {
    max-width: 300px;
    font-size: 13px;
}

.error-message {
    color: var(--error-color);
    font-size: 13px;
}

/* Settings Page */
.settings-table {
    width: 100%;
    margin-top: 16px;
}

.settings-table td {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.info-box {
    background: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
    margin-top: 16px;
}

.info-box h3 {
    margin-bottom: 12px;
    font-size: 16px;
}

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

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        height: auto;
        padding: 16px;
    }

    .main-nav {
        flex-wrap: wrap;
        justify-content: center;
        margin: 12px 0;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

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

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

    .btn {
        width: 100%;
    }
}