/* ==========================================================================
   Telegram Sync & Side-by-Side Studio - Stylesheet (Exact User Mockup & Multi-Rules)
   ========================================================================== */

:root {
    --bg-main: #060911;
    --bg-sidebar: #0d121f;
    --bg-card: rgba(14, 20, 34, 0.85);
    --bg-card-hover: rgba(24, 34, 56, 0.9);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 136, 204, 0.4);
    
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --primary-blue: #0088cc;
    --primary-blue-hover: #0077b5;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-purple: #8b5cf6;
    --accent-red: #ef4444;

    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Fira Code', monospace;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition-fast: all 0.2s ease;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

/* App Container Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.logo-container {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
}

.logo-icon {
    font-size: 24px;
    color: var(--primary-blue);
    background: rgba(0, 136, 204, 0.15);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 136, 204, 0.3);
}

.logo-text h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.logo-text h2 span {
    color: var(--primary-blue);
}

.version-tag {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
}

.nav-menu {
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    width: 100%;
    text-align: left;
}

.nav-item:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
    color: var(--text-primary);
    background-color: rgba(0, 136, 204, 0.15);
    border: 1px solid rgba(0, 136, 204, 0.3);
}

.nav-item i {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.account-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.status-indicator.online {
    background-color: var(--accent-green);
    box-shadow: 0 0 8px var(--accent-green);
}

.status-indicator.offline {
    background-color: var(--accent-red);
}

.account-info {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.account-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.account-sub {
    font-size: 10px;
    color: var(--text-muted);
}

/* Main Content Area */
.main-content {
    margin-left: 260px;
    flex: 1;
    padding: 24px 32px;
    max-width: calc(100vw - 260px);
}

/* Header Bar */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.header-title h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.header-title p {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 2px;
}

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

/* Connection Badge */
.connection-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.connection-badge.status-online {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.connection-badge.status-offline {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* User Profile Pill */
.user-profile-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-secondary);
}

.user-profile-pill i {
    font-size: 14px;
    color: var(--primary-blue);
}

.btn-logout-icon {
    background: none;
    border: none;
    color: var(--accent-red);
    cursor: pointer;
    margin-left: 6px;
    padding: 2px;
}

.btn-logout-icon:hover {
    color: #ff6b6b;
}

/* Studio Layout & Top Banner */
.studio-top-bar {
    margin-bottom: 20px;
}

.banner-notice {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    border-radius: var(--radius-sm);
    font-size: 13px;
}

.banner-notice.warning {
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #fbbf24;
}

.banner-notice strong {
    color: #ffffff;
}

/* 3-Column Studio Grid */
.studio-grid-3cols {
    display: grid;
    grid-template-columns: 1fr 1.1fr 1fr;
    gap: 20px;
    min-height: calc(100vh - 220px);
}

.studio-col {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.studio-col-header {
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.col-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.col-title i {
    font-size: 18px;
}

.col-title h3 {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.2;
}

.col-title .sub-text {
    font-size: 11px;
    color: var(--text-muted);
}

.studio-col-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.modifier-col {
    background: rgba(18, 26, 44, 0.95);
    border: 1px solid rgba(139, 92, 246, 0.25);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.modifier-section {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    margin-bottom: 14px;
}

.modifier-section h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Stream Feeds */
.stream-feed {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.stream-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    transition: var(--transition-fast);
}

.stream-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

.stream-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.stream-card-body {
    font-size: 13px;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-word;
}

.stream-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    pt-6px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 11px;
}

/* Multi-Rules Engine Stack */
.rules-stack {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.rule-row {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.3);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.rule-row input {
    flex: 1;
    font-size: 12px;
    padding: 6px 10px;
}

.btn-remove-rule {
    background: none;
    border: none;
    color: var(--accent-red);
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
}

.btn-remove-rule:hover {
    color: #ff6b6b;
}

/* Forms & UI Controls */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control, .form-select {
    width: 100%;
    padding: 10px 14px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    transition: var(--transition-fast);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 136, 204, 0.15);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
}

.btn-primary {
    background: var(--primary-blue);
    color: #ffffff;
}

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

.btn-success {
    background: var(--accent-green);
    color: #ffffff;
}

.btn-success:hover {
    background: #059669;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

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

.btn-xs {
    padding: 4px 8px;
    font-size: 11px;
}

/* Modern Pricing & Subscription Plans */
.pricing-header {
    text-align: center;
    margin-bottom: 30px;
}

.pricing-title {
    font-size: 28px;
    font-weight: 700;
    color: #ffffff;
}

.pricing-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 6px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 420px));
    gap: 24px;
    justify-content: center;
    padding: 10px 0;
}

.pricing-card {
    background: rgba(18, 24, 38, 0.95);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    display: flex;
    flex-direction: column;
    position: relative;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
    border-color: rgba(252, 213, 53, 0.4);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.7);
}

.pricing-card.featured {
    border: 1px solid rgba(252, 213, 53, 0.5);
    background: linear-gradient(180deg, rgba(30, 38, 56, 0.98) 0%, rgba(18, 24, 38, 0.98) 100%);
}

.plan-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(0, 136, 204, 0.2);
    color: var(--primary-blue);
    border: 1px solid rgba(0, 136, 204, 0.4);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 10px;
    font-weight: 700;
}

.plan-badge.pro {
    background: rgba(252, 213, 53, 0.2);
    color: #fcd535;
    border: 1px solid rgba(252, 213, 53, 0.4);
}

.pricing-card-header h3 {
    font-size: 22px;
    font-weight: 700;
    color: #ffffff;
}

.plan-price {
    margin: 16px 0;
    display: flex;
    align-items: baseline;
}

.plan-price .currency {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-yellow);
}

.plan-price .amount {
    font-size: 42px;
    font-weight: 800;
    color: #ffffff;
    line-height: 1;
}

.plan-price .period {
    font-size: 13px;
    color: var(--text-muted);
    margin-left: 6px;
}

.plan-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 24px;
}

.plan-features {
    list-style: none;
    padding: 0;
    margin: 0 0 30px 0;
    flex: 1;
}

.plan-features li {
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.plan-features li i {
    color: #0ecb81;
    font-size: 14px;
}

.btn-subscribe-plan {
    padding: 14px;
    font-size: 15px;
    font-weight: 700;
    border-radius: 10px;
    background: var(--primary-yellow);
    color: #181a20;
}

.btn-subscribe-plan:hover {
    background: #f0b90b;
}

.btn-subscribe-plan.btn-pro {
    background: linear-gradient(135deg, #fcd535 0%, #f0b90b 100%);
    box-shadow: 0 4px 15px rgba(252, 213, 53, 0.3);
}

/* Modals & Dialogs */
.modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.modal-backdrop.active { opacity: 1; pointer-events: auto; }

.modal-dialog {
    background: var(--bg-sidebar); border: 1px solid var(--border-color);
    border-radius: var(--radius-lg); width: 100%; max-width: 440px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6); overflow: hidden;
}

.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.modal-header h3 { font-size: 15px; font-weight: 600; }
.close-btn { background: transparent; border: none; color: var(--text-muted); font-size: 22px; cursor: pointer; }
.close-btn:hover { color: var(--text-primary); }
.modal-body { padding: 20px; }

.hidden { display: none !important; }
.w-100 { width: 100%; }
.text-center { text-align: center; }
.text-success { color: var(--accent-green); }
.text-muted { color: var(--text-muted); }

@media (max-width: 1200px) {
    .studio-grid-3cols { grid-template-columns: 1fr; }
    .studio-top-bar { flex-direction: column; align-items: stretch; }
}

/* --- Toast Notification System --- */
#toastContainer {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 999999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: none;
}

.toast-notification {
    pointer-events: auto;
    min-width: 320px;
    max-width: 440px;
    background: rgba(18, 24, 38, 0.95);
    backdrop-filter: blur(16px);
    border-radius: 12px;
    padding: 16px 20px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: flex-start;
    gap: 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-left: 4px solid var(--primary-yellow);
    color: #ffffff;
    animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    transition: all 0.3s ease;
}

.toast-notification.success { border-left-color: #0ecb81; }
.toast-notification.error { border-left-color: #f6465d; }
.toast-notification.warning { border-left-color: #fcd535; }
.toast-notification.info { border-left-color: #38bdf8; }

.toast-icon {
    font-size: 20px;
    margin-top: 2px;
}
.toast-notification.success .toast-icon { color: #0ecb81; }
.toast-notification.error .toast-icon { color: #f6465d; }
.toast-notification.warning .toast-icon { color: #fcd535; }
.toast-notification.info .toast-icon { color: #38bdf8; }

.toast-content {
    flex: 1;
}
.toast-title {
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 3px;
    color: #ffffff;
}
.toast-message {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
}
.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}
.toast-close:hover { color: #ffffff; }

@keyframes toastSlideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes toastFadeOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* --- Custom Premium Modal Dialog --- */
.custom-modal-backdrop {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(6, 9, 17, 0.88);
    backdrop-filter: blur(12px);
    z-index: 99999999;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.25s ease;
}
.custom-modal-backdrop.active {
    display: flex !important;
    opacity: 1 !important;
    pointer-events: auto !important;
}
.custom-modal-dialog {
    background: rgba(18, 24, 38, 0.98);
    border: 1px solid rgba(252, 213, 53, 0.3);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
    border-radius: 20px;
    width: 100%;
    max-width: 440px;
    padding: 32px;
    text-align: center;
    transform: scale(0.9);
    transition: transform 0.25s ease;
}
.custom-modal-backdrop.active .custom-modal-dialog {
    transform: scale(1);
}
.custom-modal-icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(252, 213, 53, 0.15);
    color: #fcd535;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 18px auto;
    border: 1px solid rgba(252, 213, 53, 0.3);
}
.custom-modal-title {
    font-size: 20px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 10px;
}
.custom-modal-message {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 26px;
}
.custom-modal-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}