/* Ultra Glass SaaS Theme (Background Driven) */

:root {
    /* Background */
    --bg-image: url("/static/images/ultra-glass-bg.svg");
    --bg-overlay: rgba(8, 12, 25, 0.65);
    --bg-base: #0b1220;

    /* Glass */
    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-bg-strong: rgba(255, 255, 255, 0.10);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-border-soft: rgba(255, 255, 255, 0.06);
    --glass-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);

    /* Single Brand Accent (Indigo SaaS Look) */
    --accent: #6366f1;
    --accent-soft: rgba(99, 102, 241, 0.15);
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);

    /* Semantic */
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Text */
    --text-primary: #f8fafc;
    --text-muted: rgba(248, 250, 252, 0.65);
    --text-dim: rgba(248, 250, 252, 0.45);

    /* Radius */
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
}

body {
    margin: 0;
    padding: 0;
    font-family: "Poppins", "Segoe UI", sans-serif;
    color: var(--text-primary);
    background-color: #0a0f1e;
    background-image: var(--bg-image);
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
    background-size: cover;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: -1;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.08) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: 1px;
    color: #ffffff !important;
}

.navbar .nav-link {
    color: var(--text-muted) !important;
    transition: color 0.3s ease;
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
    color: #ffffff !important;
}

.navbar-toggler {
    border-color: rgba(255, 255, 255, 0.3);
}

.card {
    background: var(--glass-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    box-shadow: var(--glass-shadow);
    transition: 0.35s ease;
}

.card:hover {
    transform: translateY(-6px);
    background: var(--glass-bg-strong);
    border-color: var(--accent-soft);
}

.card-header {
    background: rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid var(--glass-border-soft);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
    font-weight: 600;
}

.card-header.bg-primary,
.bg-primary {
    background: var(--accent-gradient);
    border-color: transparent !important;
    color: #ffffff !important;
}

.card-header.bg-success,
.bg-success {
    background: linear-gradient(135deg, #22c55e, #16a34a) !important;
    border-color: transparent !important;
    color: #ffffff !important;
}

.card-header.bg-warning,
.bg-warning {
    background: linear-gradient(135deg, #f59e0b, #f97316) !important;
    border-color: transparent !important;
    color: #ffffff !important;
}

/* Hero */
.hero-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    transition: 0.3s ease;
}

.hero-card:hover {
    transform: translateY(-5px);
}

.hero-icon-wrapper i {
    animation: float 3s ease-in-out infinite;
}

.feature-card {
    transition: 0.25s ease;
    border-radius: 16px;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
}

/* Glowing Effects */
.glow-primary {
    box-shadow: none;
}

.glow-success {
    box-shadow: none;
}

/* Buttons */
.btn-primary {
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    padding: 0.6rem 1.2rem;
    transition: 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    filter: brightness(1.1);
}

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

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

.btn-success {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    border: none;
    border-radius: var(--radius-md);
    color: #ffffff;
    font-weight: 600;
    transition: 0.3s ease;
    box-shadow: none;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: none;
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b, #f97316);
    border: none;
    border-radius: var(--radius-md);
    color: #ffffff;
    font-weight: 600;
    transition: 0.3s ease;
    box-shadow: none;
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: none;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-md);
    color: #ffffff;
    font-weight: 600;
    transition: 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: none;
}

.btn-outline-success {
    border: 1px solid rgba(34, 197, 94, 0.8);
    color: #eafff1;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    transition: 0.3s ease;
}

.btn-outline-success:hover {
    background: rgba(34, 197, 94, 0.2);
    border-color: rgba(34, 197, 94, 0.9);
    box-shadow: none;
}

.btn-outline-info {
    border: 1px solid rgba(34, 211, 238, 0.8);
    color: #e6fbff;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    transition: 0.3s ease;
}

.btn-outline-info:hover {
    background: rgba(34, 211, 238, 0.18);
    border-color: rgba(34, 211, 238, 0.9);
    box-shadow: none;
}

.btn-outline-danger {
    border: 1px solid rgba(239, 68, 68, 0.8);
    color: #ffe4e6;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    transition: 0.3s ease;
}

.btn-outline-danger:hover {
    background: rgba(239, 68, 68, 0.18);
    border-color: rgba(239, 68, 68, 0.9);
    box-shadow: none;
}

.btn-outline-light {
    border: 1px solid rgba(255, 255, 255, 0.6);
    color: #ffffff;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: 0.3s ease;
}

.btn-outline-light:hover {
    background-color: #ffffff;
    color: #0b0f1a;
    transform: translateY(-2px);
}

.btn-link {
    color: var(--accent-1);
}

.btn-link:hover {
    color: #ffffff;
}

/* Form Elements */
.form-control {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: #ffffff;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: 0.3s ease;
}

.form-control:focus {
    border-color: var(--accent-1);
    box-shadow: none;
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.form-control::placeholder {
    color: var(--text-dim);
}

.form-label {
    color: #ffffff;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Alerts */
.alert {
    border-radius: var(--radius-md);
    border: 1px solid transparent;
}

.alert-info {
    background-color: rgba(34, 211, 238, 0.12);
    color: #b6f5ff;
    border-color: rgba(34, 211, 238, 0.4);
}

.alert-success {
    background-color: rgba(34, 197, 94, 0.12);
    color: #bbf7d0;
    border-color: rgba(34, 197, 94, 0.4);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.12);
    color: #fde68a;
    border-color: rgba(245, 158, 11, 0.4);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.12);
    color: #fecaca;
    border-color: rgba(239, 68, 68, 0.4);
}

/* Badges */
.badge {
    border-radius: 999px;
    font-weight: 600;
    padding: 0.35rem 0.6rem;
}

.badge.bg-success {
    background: rgba(34, 197, 94, 0.2) !important;
    color: #bbf7d0;
}

.badge.bg-warning {
    background: rgba(245, 158, 11, 0.2) !important;
    color: #fde68a;
}

.badge.bg-primary {
    background: rgba(255, 0, 204, 0.2) !important;
    color: #ffd6f2;
}

.badge.bg-outline-primary {
    border: 1px solid rgba(255, 0, 204, 0.6);
    color: #ffffff;
    background: rgba(255, 255, 255, 0.05);
}

/* Progress */
.progress {
    height: 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
}

.progress-bar {
    background: var(--accent-gradient);
    border-radius: 20px;
}

/* Drop Zone */
.drop-zone {
    border: 1px dashed rgba(255, 255, 255, 0.35) !important;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.04);
    transition: 0.3s ease;
    cursor: pointer;
}

.drop-zone:hover,
.drop-zone.border-primary,
.drop-zone.highlight {
    border-color: var(--accent);
    background: var(--accent-soft);
}

.drop-zone.highlight {
    border-width: 2px;
}

/* Query Items */
.query-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    transition: 0.3s ease;
}

.query-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-1);
    transform: translateX(5px);
}

/* List Group */
.list-group-item {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    transition: 0.3s ease;
}

.list-group-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-1);
}

/* Modal */
.modal-content {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-radius: 20px;
    border: 1px solid var(--glass-border);
}

.modal-header {
    border-bottom: 1px solid var(--glass-border-soft);
}

.modal-footer {
    border-top: 1px solid var(--glass-border-soft);
}

.preview-content {
    white-space: pre-wrap;
    max-height: 400px;
    overflow-y: auto;
    background: rgba(255, 255, 255, 0.06);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm);
}

/* Query Results */
.answer-content {
    line-height: 1.6;
    font-size: 1.05em;
    background: rgba(34, 197, 94, 0.12);
    border-left: 4px solid #22c55e;
}

.document-chunk {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    transition: 0.3s ease;
}

.document-chunk:hover {
    background: rgba(255, 255, 255, 0.08) !important;
    border-color: var(--accent-1) !important;
    transform: translateX(5px);
}

.chunk-text {
    background: rgba(255, 255, 255, 0.05);
    font-size: 0.9em;
    max-height: 150px;
    overflow-y: auto;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.5;
}

.scroll-panel {
    max-height: 400px;
    overflow-y: auto;
}

.scroll-panel-lg {
    max-height: 600px;
    overflow-y: auto;
}

/* Timeline / Documents */
.timeline-marker {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: var(--accent-gradient);
}

.document-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: 0.3s ease;
}

.document-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-1);
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

/* Text Utilities */
.text-muted {
    color: var(--text-muted) !important;
}

.text-primary {
    color: var(--accent) !important;
}

.text-success {
    color: #22c55e !important;
}

.text-warning {
    color: #f59e0b !important;
}

.text-info {
    color: #22d3ee !important;
}

.text-white-50 {
    color: rgba(255, 255, 255, 0.5) !important;
}

/* Links */
a {
    color: var(--accent);
    text-decoration: none;
    transition: 0.3s ease;
}

a:hover {
    color: #ffffff;
}

/* Footer */
footer {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.06);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(8, 10, 18, 0.85);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-gradient);
    border-radius: 10px;
}

/* Loading Spinner */
.spinner-border {
    color: var(--accent-1);
}

/* Responsive */
@media (max-width: 768px) {
    .container-fluid {
        padding-left: 15px;
        padding-right: 15px;
    }

    .card {
        margin-bottom: 1rem;
    }

    .navbar-brand {
        font-size: 1.1rem;
    }

    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }

    .display-4 {
        font-size: 2.5rem;
    }
}

/* Animations */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    50% {
        transform: translateY(-10px);
        opacity: 0.9;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}