:root {
    --bg: #f3f5f7;
    --surface: #ffffff;
    --surface-muted: #f8fafc;
    --text: #111827;
    --muted: #667085;
    --border: #d9e1ea;
    --accent: #2563eb;
    --accent-soft: #eff6ff;
    --success: #0f766e;
    --shadow: 0 14px 40px rgba(15, 23, 42, 0.05);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
}

html {
    scroll-behavior: smooth;
}

body.app-shell {
    background: var(--bg);
    color: var(--text);
    font-family: 'Cairo', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 14px;
}

body.rtl {
    text-align: right;
}

body.rtl .navbar-brand,
body.rtl .nav-link,
body.rtl .btn,
body.rtl .form-control,
body.rtl .form-select,
body.rtl .form-check,
body.rtl .table {
    direction: rtl;
}

::selection {
    background: rgba(37, 99, 235, 0.12);
}

.app-navbar {
    backdrop-filter: saturate(180%) blur(12px);
}

.navbar-brand {
    letter-spacing: -0.02em;
}

.nav-link {
    font-weight: 500;
    color: var(--muted);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem !important;
}

.nav-link.active,
.nav-link:hover,
.nav-link:focus {
    color: var(--text);
    background: var(--accent-soft);
}

.hero-section {
    background: rgba(255,255,255,0.78);
}

.py-lg-6 {
    padding-top: 4.5rem;
    padding-bottom: 4.5rem;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--muted);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.display-title,
.section-title {
    color: var(--text);
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.display-title {
    font-size: clamp(1.8rem, 4vw, 2.75rem);
    color: var(--accent);
    max-width: 15ch;
}

.section-title {
    font-size: clamp(1.6rem, 2.8vw, 2.4rem);
}

.lead {
    max-width: 62ch;
    font-size: 1rem;
}

.panel-card,
.subject-card,
.plan-card,
.workflow-card,
.metric-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.panel-card,
.subject-card,
.plan-card,
.workflow-card {
    padding: 1.35rem;
}

.metric-card {
    padding: 1rem 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.metric-card strong {
    font-size: 1.6rem;
    line-height: 1;
    letter-spacing: -0.04em;
}

.metric-card span,
.metric-card p {
    color: var(--muted);
    margin: 0;
}

.metric-card.tall {
    min-height: 132px;
    justify-content: center;
}

.small-stat-grid .metric-card {
    min-height: 96px;
}

.mini-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem 0.6rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface-muted);
    color: var(--text);
    font-size: 0.78rem;
    font-weight: 600;
}

.stack-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.stack-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--border);
}

.stack-item:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.stack-item p {
    margin: 0.15rem 0 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.subject-card,
.plan-card {
    display: flex;
    flex-direction: column;
}

.subject-meta-grid,
.detail-meta-grid,
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.8rem;
}

.subject-meta-grid div,
.detail-meta-grid div,
.pricing-grid div,
.summary-row {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface-muted);
    padding: 0.8rem 0.9rem;
}

.subject-meta-grid strong,
.detail-meta-grid strong,
.pricing-grid strong,
.summary-row strong {
    display: block;
    margin-bottom: 0.2rem;
    font-size: 0.88rem;
}

.subject-meta-grid span,
.detail-meta-grid span,
.pricing-grid span,
.summary-row span {
    color: var(--muted);
    font-size: 0.9rem;
}

.summary-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.65rem;
}

.compact-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.compact-list li {
    position: relative;
    padding-inline-start: 1.2rem;
    color: var(--text);
}

.compact-list li::before {
    content: '';
    width: 0.42rem;
    height: 0.42rem;
    border-radius: 999px;
    background: var(--accent);
    position: absolute;
    inset-inline-start: 0;
    top: 0.45rem;
}

.compact-list-tight {
    gap: 0.5rem;
}

.workflow-card {
    min-height: 100%;
}

.step-index {
    display: inline-flex;
    width: 2rem;
    height: 2rem;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: var(--accent-soft);
    border: 1px solid var(--border);
    margin-bottom: 0.85rem;
    font-weight: 700;
    font-size: 0.82rem;
}

.workflow-card p {
    color: var(--muted);
    margin-bottom: 0;
}

.plan-card.highlighted {
    border-color: #cdd6e1;
    box-shadow: 0 20px 48px rgba(15, 23, 42, 0.08);
}

.display-price {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.04em;
}

.catalog-search-wrap {
    min-width: min(100%, 320px);
}

.empty-filter-state,
.empty-state-inline {
    border: 1px dashed var(--border);
    border-radius: var(--radius-md);
    background: rgba(255,255,255,0.7);
    padding: 1rem;
}

.dashboard-table thead th {
    color: var(--muted);
    font-weight: 600;
    font-size: 0.84rem;
    border-bottom-color: var(--border);
}

.dashboard-table td,
.dashboard-table th {
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
}

.copy-chip {
    border: 1px solid var(--border);
    background: var(--surface);
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
}

.copy-chip:hover,
.copy-chip:focus {
    background: var(--accent-soft);
}

.btn {
    border-radius: 10px;
    font-weight: 600;
    padding: 0.72rem 1rem;
}

.btn-sm {
    padding: 0.45rem 0.7rem;
    border-radius: 9px;
}

.btn-lg {
    padding: 0.8rem 1.15rem;
}

.btn-dark {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.btn-outline-dark {
    color: var(--text);
    border-color: var(--border);
}

.btn-outline-dark:hover,
.btn-outline-dark:focus {
    color: var(--text);
    background: var(--accent-soft);
    border-color: #c4ced8;
}

.form-control,
.form-select,
.form-check {
    border-radius: 10px;
}

.form-control,
.form-select {
    min-height: 46px;
    border-color: var(--border);
    background: #fff;
}

.form-control:focus,
.form-select:focus,
.btn:focus,
.copy-chip:focus,
.nav-link:focus {
    box-shadow: 0 0 0 0.2rem rgba(17, 24, 39, 0.12);
    border-color: #bcc8d6;
}

.alert,
.toast,
.badge {
    border-radius: var(--radius-md);
}

.integration-rail {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.sticky-card {
    position: sticky;
    top: 88px;
}

footer {
    background: rgba(255,255,255,0.86);
}

@media (max-width: 991.98px) {
    .sticky-card {
        position: static;
    }

    .subject-meta-grid,
    .detail-meta-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 575.98px) {
    .panel-card,
    .subject-card,
    .plan-card,
    .workflow-card {
        padding: 1.05rem;
    }

    .display-title {
        max-width: 100%;
    }
}


/* Modal dark blue header */
.modal-header.bg-dark-blue {
    background-color: #1e3a8a;
    color: #ffffff;
    border-top-left-radius: calc(var(--bs-modal-border-radius, .5rem) - 1px);
    border-top-right-radius: calc(var(--bs-modal-border-radius, .5rem) - 1px);
}
.modal-header.bg-dark-blue .modal-title,
.modal-header.bg-dark-blue .section-title {
    color: #ffffff !important;
}

/* Modern Additions */
.hero-section {
    background: linear-gradient(135deg, #f8f9fc 0%, #e2e8f0 100%);
    position: relative;
    overflow: hidden;
}
.hero-section::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, rgba(255,255,255,0) 70%);
    z-index: 0;
}
.hero-section > .container {
    position: relative;
    z-index: 1;
}
.hero-section {
    border-bottom: 0 !important;
}

.plan-card, .subject-card, .workflow-card, .card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid rgba(0,0,0,0.06) !important;
    background: rgba(255, 255, 255, 0.9);
}
.plan-card:hover, .subject-card:hover, .workflow-card:hover, .card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08) !important;
}
.metric-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.8);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}
.btn {
    transition: all 0.2s ease;
}
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}