:root {
    --primary-color: #7c3aed;
    --primary-dark: #6d28d9;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-dark: #0f0f1e;
    --bg-card: #1a1a2e;
    --bg-hover: #252541;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --border-color: #2d3748;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

body.light-theme {
    --bg-dark: #f5f7fa;
    --bg-card: #ffffff;
    --bg-hover: #e2e8f0;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body.light-theme {
    background: linear-gradient(135deg, #f5f7fa 0%, #e2e8f0 100%);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1a1a3e 100%);
    color: var(--text-primary);
    min-height: 100vh;
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

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

.login-header h1 {
    font-size: 28px;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--primary-color), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.form-group {
    margin-bottom: 20px;
}

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

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 15px;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(124, 58, 237, 0.3);
}

.btn:active {
    transform: translateY(0);
}

.btn-secondary {
    padding: 10px 20px;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--primary-color);
}

.error-message {
    margin-top: 16px;
    padding: 12px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger-color);
    border-radius: 8px;
    color: var(--danger-color);
    font-size: 14px;
    display: none;
}

.error-message.show {
    display: block;
}

.dashboard {
    display: none;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.dashboard.active {
    display: block;
}

.dashboard-header {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.tab-navigation {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 12px 24px;
    font-size: 16px;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    font-weight: 500;
}

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

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.salon-info h1 {
    font-size: 24px;
    margin-bottom: 4px;
}

.salon-info p {
    color: var(--text-secondary);
    font-size: 14px;
}

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

/* Theme Toggle Switch */
.theme-toggle {
    cursor: pointer;
    padding: 4px;
}

.theme-toggle-track {
    position: relative;
    width: 60px;
    height: 30px;
    background: var(--bg-hover);
    border-radius: 15px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    padding: 0 4px;
}

.theme-toggle:hover .theme-toggle-track {
    border-color: var(--primary-color);
}

.theme-toggle-thumb {
    position: absolute;
    width: 22px;
    height: 22px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    left: 4px;
    box-shadow: 0 2px 8px rgba(124, 58, 237, 0.4);
}

body.light-theme .theme-toggle-thumb {
    transform: translateX(30px);
    background: linear-gradient(135deg, #f59e0b, #d97706);
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.4);
}

.theme-icon {
    font-size: 14px;
    position: absolute;
    transition: all 0.3s ease;
    pointer-events: none;
}

.theme-icon.sun {
    left: 6px;
    opacity: 0;
}

.theme-icon.moon {
    right: 6px;
    opacity: 1;
}

body.light-theme .theme-icon.sun {
    opacity: 1;
}

body.light-theme .theme-icon.moon {
    opacity: 0;
}

/* Language Toggle Switch */
.lang-toggle {
    cursor: pointer;
    padding: 4px;
    margin-right: 10px;
}

.lang-toggle-track {
    position: relative;
    width: 70px;
    height: 30px;
    background: var(--bg-hover);
    border-radius: 15px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 6px;
}

.lang-toggle:hover .lang-toggle-track {
    border-color: var(--primary-color);
}

.lang-toggle-thumb {
    position: absolute;
    width: 28px;
    height: 22px;
    background: linear-gradient(135deg, #10b981, #059669);
    border-radius: 11px;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    left: 4px;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.4);
    z-index: 1;
}

body[data-lang="ru"] .lang-toggle-thumb {
    transform: translateX(36px);
}

.lang-icon {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 2;
    position: relative;
}

.lang-icon.en {
    opacity: 1;
}

.lang-icon.ru {
    opacity: 0.5;
}

body[data-lang="ru"] .lang-icon.en {
    opacity: 0.5;
}

body[data-lang="ru"] .lang-icon.ru {
    opacity: 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.period-controls {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 20px 24px;
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.period-controls .section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    flex-wrap: wrap;
}

.period-controls .section-title h2 {
    margin: 0;
    font-size: 18px;
}

.period-controls .section-title p {
    margin: 0;
}

.stat-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.stat-info h3 {
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 2px;
}

.stat-period {
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 400;
    margin-bottom: 8px;
    opacity: 0.8;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.primary { background: rgba(124, 58, 237, 0.2); }
.stat-icon.success { background: rgba(16, 185, 129, 0.2); }
.stat-icon.warning { background: rgba(245, 158, 11, 0.2); }
.stat-icon.danger { background: rgba(239, 68, 68, 0.2); }

.charts-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.charts-row.full-width {
    grid-template-columns: 1fr;
}

.charts-row.two-cols {
    grid-template-columns: repeat(2, 1fr);
}

.chart-section.half {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--border-color);
}

@media (min-width: 1200px) {
    .charts-row:not(.full-width) {
        grid-template-columns: repeat(2, 1fr);
    }
}

.chart-container.small {
    position: relative;
    height: 250px;
}

.chart-section {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.section-header {
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.section-title {
    flex: 1;
}

.date-controls-wrapper {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: nowrap;
}

.date-controls {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.period-selector {
    display: flex;
    gap: 4px;
    background: var(--bg-dark);
    padding: 4px;
    border-radius: 8px;
    flex-shrink: 0;
}

.period-btn {
    padding: 8px 16px;
    background: transparent;
    color: var(--text-secondary);
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

/* Channel Selector */
.channel-controls {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 20px 24px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.channel-selector {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.channel-btn, .channel-btn-chat {
    padding: 10px 20px;
    background: var(--bg-dark);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.channel-btn:hover, .channel-btn-chat:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
    border-color: var(--primary-color);
}

.channel-btn.active, .channel-btn-chat.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.channel-icon {
    font-size: 16px;
}

.channel-label {
    background: var(--bg-dark);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    color: var(--text-secondary);
    margin-left: 12px;
}

.channel-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    margin-left: 8px;
}

.channel-badge.telegram {
    background: rgba(0, 136, 204, 0.2);
    color: #0088cc;
}

.channel-badge.whatsapp {
    background: rgba(37, 211, 102, 0.2);
    color: #25d366;
}

.dialog-channel-icon {
    font-size: 14px;
    margin-right: 4px;
}

.dialog-channel-icon.telegram {
    color: #0088cc;
}

.dialog-channel-icon.whatsapp {
    color: #25d366;
}

.date-input {
    padding: 8px 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    min-width: 220px;
    cursor: pointer;
}

.date-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

#datePickerContainer {
    flex-shrink: 0;
}

/* Mobile responsive adjustments for period selector */
@media (max-width: 1200px) {
    .date-controls-wrapper {
        flex-wrap: wrap;
    }
    
    #datePickerContainer {
        width: 100%;
        margin-top: 8px;
    }
    
    .date-input {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .period-selector {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }
    
    .period-btn {
        padding: 10px 12px;
        font-size: 12px;
        flex: 1 1 auto;
        min-width: 70px;
        text-align: center;
    }
    
    .date-controls-wrapper {
        flex-direction: column;
        width: 100%;
    }
    
    #datePickerContainer {
        width: 100%;
    }
    
    .date-input {
        width: 100%;
        min-width: 100%;
    }
}

@media (max-width: 480px) {
    .period-btn {
        padding: 8px 10px;
        font-size: 11px;
        min-width: 60px;
    }
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    background: var(--bg-dark);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--danger-color);
    color: white;
    border-color: var(--danger-color);
}

.chart-container {
    position: relative;
    height: 300px;
}

.dialogs-container {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 20px;
    min-height: 600px;
}

.dialogs-list {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border-color);
    overflow-y: auto;
}

.dialog-item {
    padding: 16px;
    margin-bottom: 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dialog-item:hover {
    background: var(--bg-hover);
    border-color: var(--primary-color);
    transform: translateX(4px);
}

.dialog-item.active {
    background: rgba(124, 58, 237, 0.2);
    border-color: var(--primary-color);
}

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

.dialog-name {
    font-weight: 600;
    font-size: 15px;
}

.dialog-phone {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-family: monospace;
}

.dialog-time {
    font-size: 12px;
    color: var(--text-secondary);
}

.dialog-preview {
    font-size: 13px;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.messages-panel {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    min-height: 600px;
}

.dialog-info h2 {
    margin: 0;
    font-size: 18px;
}

.dialog-phone-header {
    color: var(--text-secondary);
    font-size: 13px;
    margin: 4px 0 0 0;
    font-family: monospace;
}

#messagesContainer {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px;
    background: var(--bg-dark);
    border-radius: 12px;
    margin-top: 16px;
    min-height: 400px;
    max-height: 70vh;
    display: block;
}

#messagesContainer::-webkit-scrollbar {
    width: 8px;
}

#messagesContainer::-webkit-scrollbar-track {
    background: var(--bg-dark);
    border-radius: 4px;
}

#messagesContainer::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

#messagesContainer::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.messages-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 14px;
    min-height: 300px;
}

.date-divider {
    text-align: center;
    margin: 20px 0;
}

.date-divider-text {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-hover);
    border-radius: 16px;
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.message {
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
    max-width: 75%;
    animation: messageSlide 0.2s ease-out;
    clear: both;
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.outgoing {
    margin-left: auto;
    margin-right: 0;
    align-items: flex-end;
}

.message.incoming {
    margin-left: 0;
    margin-right: auto;
    align-items: flex-start;
}

.message-header {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    padding: 0 4px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.message.outgoing .message-header {
    color: var(--primary-color);
}

.message.incoming .message-header {
    color: var(--success-color);
}

.message-content {
    padding: 10px 14px;
    border-radius: 12px;
    position: relative;
    word-wrap: break-word;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.message.incoming .message-content {
    background: var(--bg-hover);
    border-bottom-left-radius: 4px;
}

.message.outgoing .message-content {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.3), rgba(124, 58, 237, 0.4));
    border-bottom-right-radius: 4px;
}

.message-text {
    word-wrap: break-word;
    line-height: 1.5;
    margin-bottom: 4px;
    font-size: 14px;
}

.message-time {
    font-size: 10px;
    color: var(--text-secondary);
    text-align: right;
    margin-top: 2px;
    opacity: 0.7;
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 992px) {
    .dialogs-container {
        grid-template-columns: 1fr;
    }
    
    .dialogs-list {
        max-height: 400px;
    }
}

@media (max-width: 768px) {
    .dashboard {
        padding: 12px;
    }
    
    .dashboard-header {
        padding: 16px;
    }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        height: 250px;
    }
    
    .period-controls {
        padding: 16px;
    }
    
    .period-controls .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .date-controls-wrapper {
        width: 100%;
    }
}

/* Footer */
.dashboard-footer {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 20px 24px;
    margin-top: 32px;
    border: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-left p {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0;
}

.footer-right {
    display: flex;
    gap: 12px;
}

.support-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--success-color);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
}

.support-btn:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.support-btn span:first-child {
    font-size: 18px;
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}