/* ==========================================================================
   OTT Flow CRM - Modern Dark-Slate Responsive Stylesheet
   Strict standard: No !important tags used. Specificity & cascade architecture.
   ========================================================================== */

:root {
    --bg-body: #0b0f19;
    --bg-surface: #111827;
    --bg-surface-elevated: #1f2937;
    --bg-surface-hover: #263346;
    --border-subtle: #1e293b;
    --border-strong: #334155;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-primary: #3b82f6;
    --accent-hover: #2563eb;
    --accent-focus: rgba(59, 130, 246, 0.35);
    
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.12);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.12);
    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.14);
    --color-info: #06b6d4;
    --color-info-bg: rgba(6, 182, 212, 0.12);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow-card: 0 4px 16px -2px rgba(0, 0, 0, 0.45);
    --shadow-modal: 0 20px 40px -4px rgba(0, 0, 0, 0.7);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

[data-theme="light"] {
    --bg-body: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #f8fafc;
    --bg-surface-hover: #e2e8f0;
    --border-subtle: #e2e8f0;
    --border-strong: #cbd5e1;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --accent-primary: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-focus: rgba(37, 99, 235, 0.25);
    
    --color-success: #059669;
    --color-success-bg: rgba(5, 150, 105, 0.12);
    --color-warning: #d97706;
    --color-warning-bg: rgba(217, 119, 6, 0.12);
    --color-danger: #dc2626;
    --color-danger-bg: rgba(220, 38, 38, 0.12);
    --color-info: #0284c7;
    --color-info-bg: rgba(2, 132, 199, 0.12);
    
    --shadow-card: 0 4px 12px -2px rgba(0, 0, 0, 0.08);
    --shadow-modal: 0 20px 35px -5px rgba(0, 0, 0, 0.2);
}

/* Base Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 14.5px;
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header & Navigation */
.top-header {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.header-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.brand-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
}

.brand-icon {
    font-size: 1.35rem;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

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

.nav-item.active {
    color: var(--accent-primary);
    background-color: var(--bg-surface-elevated);
    font-weight: 600;
}

.nav-icon {
    font-size: 1rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
}

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

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

.btn-secondary {
    background-color: var(--bg-surface-elevated);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--text-secondary);
    border-color: var(--border-strong);
}

.btn-outline:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.btn-sm {
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
}

.btn-renew {
    background-color: var(--color-success-bg);
    color: var(--color-success);
    border-color: rgba(16, 185, 129, 0.3);
}

.btn-renew:hover {
    background-color: var(--color-success);
    color: #ffffff;
}

.btn-send {
    background-color: var(--color-info-bg);
    color: var(--color-info);
    border-color: rgba(6, 182, 212, 0.3);
}

.btn-send:hover {
    background-color: var(--color-info);
    color: #ffffff;
}

.btn-copy {
    background-color: var(--bg-surface-elevated);
    color: var(--text-secondary);
    border-color: var(--border-strong);
}

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

.btn-icon-only {
    padding: 0.5rem;
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
}

.btn-icon-only:hover {
    background-color: var(--bg-surface-elevated);
    color: var(--text-primary);
}

/* Page Layout */
.page-main {
    flex: 1;
    max-width: 1440px;
    width: 100%;
    margin: 0 auto;
    padding: 1.75rem 1.5rem 3rem 1.5rem;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.75rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-title {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* KPI Cards Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.kpi-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.kpi-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.kpi-label {
    font-size: 0.825rem;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

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

.kpi-value-row {
    display: flex;
    align-items: baseline;
    gap: 0.65rem;
}

.kpi-value {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
    font-feature-settings: "tnum";
}

.kpi-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.55rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.badge-status-active {
    background-color: var(--color-success-bg);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-status-warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.25);
}

.badge-status-danger {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.25);
}

.badge-status-muted {
    background-color: var(--bg-surface-elevated);
    color: var(--text-muted);
    border: 1px solid var(--border-strong);
}

/* Tabs */
.tabs-container {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 0.35rem;
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-bottom: 1.25rem;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

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

.tab-btn.active {
    color: var(--text-primary);
    background-color: var(--bg-surface-elevated);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

/* Card & Tables */
.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    margin-bottom: 2rem;
}

.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
}

.table-responsive {
    overflow-x: auto;
    width: 100%;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.875rem;
}

.data-table th {
    background-color: var(--bg-surface-elevated);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-subtle);
    white-space: nowrap;
}

.data-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-primary);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background-color: var(--bg-surface-elevated);
}

.cell-customer {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.customer-name {
    font-weight: 600;
    color: var(--text-primary);
}

.customer-wa-link {
    color: var(--color-success);
    font-size: 0.8rem;
    text-decoration: none;
    font-family: var(--font-mono);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.customer-wa-link:hover {
    text-decoration: underline;
}

.cell-service {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.service-title {
    font-weight: 600;
}

.account-email {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.profile-tag {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    background-color: var(--bg-surface-elevated);
    padding: 0.15rem 0.45rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    display: inline-block;
}

.actions-row {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* Progress bar for slot usage */
.slot-progress-wrapper {
    width: 100%;
    min-width: 120px;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.slot-progress-bar {
    height: 7px;
    width: 100%;
    background-color: var(--bg-surface-elevated);
    border-radius: 9999px;
    overflow: hidden;
    position: relative;
}

.slot-progress-fill {
    height: 100%;
    background-color: var(--accent-primary);
    border-radius: 9999px;
    transition: width 0.3s ease;
}

.slot-progress-fill.status-full {
    background-color: var(--color-danger);
}

.slot-progress-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    z-index: 1000;
}

.modal-backdrop.open {
    display: flex;
}

.modal-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-modal);
    width: 100%;
    max-width: 650px;
    max-height: 90vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 700;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.75rem;
    cursor: pointer;
    line-height: 1;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-form {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-label {
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    background-color: var(--bg-surface-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    padding: 0.6rem 0.75rem;
    transition: var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-focus);
}

.form-helper {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.input-with-indicator {
    position: relative;
    display: flex;
    align-items: center;
}

.lookup-indicator {
    position: absolute;
    right: 0.75rem;
    font-size: 0.85rem;
}

.duration-pills {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 0.35rem;
}

.pill-btn {
    flex: 1;
    background-color: var(--bg-surface-elevated);
    border: 1px solid var(--border-strong);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.45rem 0.25rem;
    cursor: pointer;
    transition: var(--transition);
}

.pill-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}

.pill-btn.active {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #ffffff;
}

.expiry-preview {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.expiry-preview strong {
    color: var(--color-warning);
}

.checkbox-group {
    background-color: var(--bg-surface-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-subtle);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    pointer-events: auto;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-strong);
    border-left: 4px solid var(--accent-primary);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-modal);
    padding: 0.85rem 1.25rem;
    min-width: 280px;
    max-width: 420px;
    font-size: 0.875rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    animation: toastIn 0.25s cubic-bezier(0, 0, 0.2, 1);
}

.toast-success {
    border-left-color: var(--color-success);
}

.toast-warning {
    border-left-color: var(--color-warning);
}

.toast-error {
    border-left-color: var(--color-danger);
}

@keyframes toastIn {
    from {
        transform: translateY(16px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Login Page Layout */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1.5rem;
}

.login-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-modal);
    width: 100%;
    max-width: 420px;
    padding: 2.25rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-brand {
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.alert-box {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
}

.alert-danger {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Responsive queries */
@media (max-width: 992px) {
    .header-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .main-nav {
        overflow-x: auto;
        padding-bottom: 0.25rem;
    }
    
    .header-actions {
        justify-content: flex-end;
    }
}

@media (max-width: 640px) {
    .form-grid-2 {
        grid-template-columns: 1fr;
    }
    
    .kpi-grid {
        grid-template-columns: 1fr;
    }
    
    .page-main {
        padding: 1rem 0.75rem;
    }
}