/**
 * SkriptiQ — Clean Design System (Modern Light & Minimalist SaaS)
 * Inspired by Linear, Stripe, and Notion
 */

:root {
    /* Color Palette */
    --app-bg: #f8fafc;
    --surface-bg: #ffffff;
    --surface-card: #ffffff;
    --surface-subtle: #f1f5f9;
    --surface-muted: #f8fafc;
    --surface-border: #e2e8f0;
    --surface-border-subtle: #f1f5f9;
    --surface-border-hover: #cbd5e1;
    --surface-hover: #f8fafc;

    /* Typography Colors */
    --text-main: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --text-dim: #94a3b8;

    /* Brand Accent Colors */
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --primary-border: #c7d2fe;
    --accent: #8b5cf6;
    --accent-light: #f5f3ff;
    --accent-border: #ddd6fe;

    /* Semantic States */
    --success: #10b981;
    --success-light: #ecfdf5;
    --success-border: #a7f3d0;
    --success-text: #047857;

    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --warning-border: #fde68a;
    --warning-text: #b45309;

    --info: #0284c7;
    --info-light: #f0f9ff;
    --info-border: #bae6fd;
    --info-text: #0369a1;

    --danger: #ef4444;
    --danger-light: #fef2f2;
    --danger-border: #fecaca;
    --danger-text: #b91c1c;

    /* Shadows & Elevation */
    --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.04);
    --shadow-card: 0 2px 8px -2px rgba(15, 23, 42, 0.05), 0 1px 3px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    --shadow-hover: 0 12px 24px -6px rgba(15, 23, 42, 0.09), 0 4px 8px -4px rgba(15, 23, 42, 0.05);
}

/* Base Document Styles */
body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
    background-color: var(--app-bg) !important;
    color: var(--text-secondary) !important;
    min-height: 100vh;
    letter-spacing: -0.011em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
    color: var(--text-main) !important;
    font-weight: 700;
    letter-spacing: -0.022em;
}

p {
    color: var(--text-secondary);
    line-height: 1.625;
}

/* Subtle Smooth Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Top Navbar (Clean Frosted Glass) */
.navbar-app,
.navbar-blur {
    background-color: rgba(255, 255, 255, 0.92) !important;
    backdrop-filter: blur(14px) !important;
    -webkit-backdrop-filter: blur(14px) !important;
    border-bottom: 1px solid var(--surface-border) !important;
    box-shadow: 0 1px 3px 0 rgba(15, 23, 42, 0.03);
    z-index: 1030;
}

.navbar-brand {
    color: var(--text-main) !important;
}

.navbar-app .nav-link,
.navbar-blur .nav-link {
    color: #475569 !important;
    font-weight: 500;
    font-size: 0.9125rem;
    padding: 0.45rem 0.85rem !important;
    border-radius: 8px;
    transition: all 0.15s ease;
}

.navbar-app .nav-link:hover,
.navbar-blur .nav-link:hover {
    background-color: #f1f5f9;
    color: var(--text-main) !important;
}

.navbar-app .nav-link.active,
.navbar-blur .nav-link.active {
    background-color: var(--primary-light) !important;
    color: var(--primary) !important;
    font-weight: 600 !important;
}

.navbar-toggler {
    border-color: var(--surface-border) !important;
    padding: 0.35rem 0.65rem;
}
.navbar-toggler-icon {
    filter: invert(0.3);
}

/* Cards & Surfaces (Clean Pure White) */
.card-custom,
.glass-card {
    background-color: var(--surface-card) !important;
    border: 1px solid var(--surface-border) !important;
    border-radius: 14px !important;
    box-shadow: var(--shadow-card) !important;
    color: var(--text-secondary);
    transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.card-custom:hover,
.glass-card:hover {
    box-shadow: var(--shadow-hover) !important;
    border-color: var(--surface-border-hover) !important;
}

/* Map legacy dark text classes to clean text colors inside cards */
.card-custom .text-white,
.glass-card .text-white,
.container .text-white,
.container-fluid .text-white {
    color: var(--text-main) !important;
}

/* Maintain crisp white text inside solid buttons & gradient badges */
.btn-primary-gradient,
.gradient-btn,
.btn-primary,
.badge.bg-primary,
.badge.bg-dark,
.btn.text-white,
.badge.text-white {
    color: #ffffff !important;
}

/* Buttons (Modern Minimalist) */
.btn-primary-gradient,
.gradient-btn {
    background: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%) !important;
    color: #ffffff !important;
    border: none !important;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(79, 70, 229, 0.25);
    border-radius: 10px;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary-gradient:hover,
.gradient-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.36);
    color: #ffffff !important;
}

.btn-primary-gradient:active,
.gradient-btn:active {
    transform: translateY(0);
}

.btn-outline-primary {
    background-color: #ffffff !important;
    border: 1px solid var(--primary-border) !important;
    color: var(--primary) !important;
    font-weight: 600;
    border-radius: 10px;
    transition: all 0.15s ease;
}

.btn-outline-primary:hover {
    background-color: var(--primary-light) !important;
    border-color: var(--primary) !important;
    color: var(--primary-hover) !important;
}

.btn-outline-secondary {
    background-color: #ffffff !important;
    border: 1px solid var(--surface-border) !important;
    color: #475569 !important;
    font-weight: 500;
    border-radius: 10px;
    transition: all 0.15s ease;
}

.btn-outline-secondary:hover {
    background-color: #f8fafc !important;
    border-color: #cbd5e1 !important;
    color: var(--text-main) !important;
}

.btn-outline-light {
    background-color: #ffffff !important;
    border: 1px solid var(--surface-border) !important;
    color: var(--text-main) !important;
    font-weight: 600;
    border-radius: 10px;
}

.btn-outline-light:hover {
    background-color: #f8fafc !important;
    border-color: var(--surface-border-hover) !important;
    color: var(--text-main) !important;
}

/* Form Controls (Inputs, Selects, Textareas) */
.form-control,
.form-select {
    background-color: #ffffff !important;
    border: 1px solid #cbd5e1 !important;
    color: var(--text-main) !important;
    border-radius: 9px !important;
    font-size: 0.925rem;
    padding: 0.6rem 0.85rem;
    box-shadow: var(--shadow-xs);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: #6366f1 !important;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.16) !important;
    outline: none;
}

.form-control::placeholder {
    color: #94a3b8 !important;
    opacity: 1;
}

.input-group-text {
    background-color: #f8fafc !important;
    border: 1px solid #cbd5e1 !important;
    color: #64748b !important;
    border-radius: 9px;
}

/* Form labels */
.form-label {
    color: var(--text-main) !important;
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 0.35rem;
}

/* Pills & Badges (Soft Modern Aesthetic) */
.badge-quota {
    background: var(--primary-light) !important;
    border: 1px solid var(--primary-border) !important;
    color: #4338ca !important;
    font-weight: 600;
}

.badge-soft-indigo {
    background: var(--primary-light) !important;
    color: #4338ca !important;
    border: 1px solid var(--primary-border) !important;
}

.badge-soft-emerald {
    background: var(--success-light) !important;
    color: var(--success-text) !important;
    border: 1px solid var(--success-border) !important;
}

.badge-soft-amber {
    background: var(--warning-light) !important;
    color: var(--warning-text) !important;
    border: 1px solid var(--warning-border) !important;
}

.badge-soft-purple {
    background: var(--accent-light) !important;
    color: #6d28d9 !important;
    border: 1px solid var(--accent-border) !important;
}

/* Overriding legacy dark inner blocks like `bg-black bg-opacity-40` */
.bg-black,
.bg-black.bg-opacity-40,
.bg-black.bg-opacity-50,
.bg-black.bg-opacity-60,
.bg-dark,
.bg-dark.bg-opacity-40,
.bg-dark.bg-opacity-50 {
    background-color: var(--surface-subtle) !important;
    color: var(--text-secondary);
}

.border-secondary,
.border-secondary.border-opacity-25,
.border-secondary.border-opacity-30,
.border-secondary.border-opacity-40 {
    border-color: var(--surface-border) !important;
}

/* Modals & Dropdowns */
.dropdown-menu,
.dropdown-menu-dark {
    background-color: #ffffff !important;
    border: 1px solid var(--surface-border) !important;
    border-radius: 12px !important;
    box-shadow: var(--shadow-lg) !important;
    padding: 0.4rem;
}

.dropdown-item {
    color: var(--text-secondary) !important;
    border-radius: 7px;
    padding: 0.5rem 0.85rem;
    font-size: 0.875rem;
    transition: all 0.15s ease;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--surface-subtle) !important;
    color: var(--primary) !important;
}

.dropdown-item.text-danger:hover {
    background-color: var(--danger-light) !important;
    color: var(--danger-text) !important;
}

.dropdown-divider {
    border-color: var(--surface-border-subtle) !important;
    margin: 0.35rem 0;
}

.modal-content {
    background-color: #ffffff !important;
    border: 1px solid var(--surface-border) !important;
    border-radius: 16px !important;
    box-shadow: var(--shadow-xl) !important;
}

.modal-header,
.modal-footer {
    border-color: var(--surface-border-subtle) !important;
}

.modal-title {
    color: var(--text-main) !important;
    font-weight: 700;
}

/* Alerts */
.alert {
    border-radius: 12px !important;
    border: 1px solid transparent !important;
}

.alert-success {
    background-color: var(--success-light) !important;
    border-color: var(--success-border) !important;
    color: var(--success-text) !important;
}

.alert-warning {
    background-color: var(--warning-light) !important;
    border-color: var(--warning-border) !important;
    color: var(--warning-text) !important;
}

.alert-danger {
    background-color: var(--danger-light) !important;
    border-color: var(--danger-border) !important;
    color: var(--danger-text) !important;
}

.alert-info {
    background-color: var(--info-light) !important;
    border-color: var(--info-border) !important;
    color: var(--info-text) !important;
}

.btn-close {
    opacity: 0.6;
}
.btn-close:hover {
    opacity: 1;
}

/* Progress Bars */
.progress-slim,
.progress {
    height: 7px;
    border-radius: 999px;
    background-color: #e2e8f0 !important;
    overflow: hidden;
}

.progress-bar {
    border-radius: 999px;
    transition: width 0.4s ease;
}

/* Accordions (Clean Light) */
.accordion-item {
    background: transparent !important;
    border: none !important;
}

.accordion-button {
    background-color: #ffffff !important;
    color: var(--text-main) !important;
    border: 1px solid var(--surface-border) !important;
    border-radius: 10px !important;
    box-shadow: none !important;
    padding: 0.75rem 1rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.accordion-button:not(.collapsed) {
    background-color: var(--primary-light) !important;
    color: var(--primary) !important;
    border-color: var(--primary-border) !important;
}

.accordion-button::after {
    filter: brightness(0.4);
}

/* Tables (Clean Light) */
.table {
    color: var(--text-secondary);
    border-color: var(--surface-border) !important;
}

.table > thead > tr > th {
    background-color: #f8fafc !important;
    color: #475569 !important;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--surface-border) !important;
    padding: 0.75rem 1rem;
}

.table > tbody > tr > td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--surface-border-subtle) !important;
    vertical-align: middle;
}

.table-hover > tbody > tr:hover {
    background-color: #f8fafc !important;
}

/* Text Gradients (Clean Modern) */
.gradient-text {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #0284c7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Footer (Clean Subtle Border) */
footer {
    background-color: #ffffff !important;
    border-top: 1px solid var(--surface-border) !important;
    color: #64748b;
}

/* Thesis Paper Preview Container */
.thesis-paper-container {
    background-color: #e2e8f0;
    padding: 2.5rem 1rem;
    border-radius: 14px;
}