/* Core theme tokens */
:root {
    --font-base: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-accent: #14b8a6;
    --color-background: #f5f7fb;
    --color-surface: #ffffff;
    --color-surface-muted: #f1f5ff;
    --color-text: #0f172a;
    --color-text-muted: #475569;
    --color-border: rgba(148, 163, 184, 0.28);
    --color-navbar: linear-gradient(90deg, rgba(37, 99, 235, 0.95) 0%, rgba(30, 64, 175, 0.92) 55%, rgba(13, 148, 136, 0.92) 100%);
    --shadow-soft: 0 12px 30px rgba(15, 23, 42, 0.08);
    --shadow-card: 0 24px 50px rgba(15, 23, 42, 0.12);
    --shadow-hover: 0 20px 45px rgba(37, 99, 235, 0.14);
}

[data-theme="dark"] {
    --color-background: #0f172a;
    --color-surface: #15213c;
    --color-surface-muted: #1d2b4b;
    --color-text: #e2e8f0;
    --color-text-muted: #9eaecf;
    --color-border: rgba(82, 99, 141, 0.45);
    --color-navbar: linear-gradient(90deg, rgba(30, 64, 175, 0.92) 0%, rgba(59, 130, 246, 0.88) 40%, rgba(56, 189, 248, 0.82) 100%);
    --shadow-soft: 0 20px 50px rgba(2, 6, 23, 0.55);
    --shadow-card: 0 25px 60px rgba(2, 6, 23, 0.65);
}

body {
    background: var(--color-background);
    color: var(--color-text);
    font-family: var(--font-base);
    font-weight: 400;
    transition: background-color 0.35s ease, color 0.35s ease;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: none;
}

.app-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-content {
    flex: 1 1 auto;
}

.app-footer {
    background: transparent;
}

.text-white-75 {
    color: rgba(255, 255, 255, 0.75) !important;
}

/* Navbar */
.app-navbar {
    background: var(--color-navbar);
    backdrop-filter: blur(10px);
    --bs-navbar-nav-link-padding-x: 0.95rem;
    --bs-navbar-nav-link-padding-y: 0.5rem;
}

.app-navbar .navbar-toggler {
    border: none;
    box-shadow: none;
}

.app-navbar .nav-link {
    color: rgba(255, 255, 255, 0.82);
    font-weight: 500;
    position: relative;
    transition: color 0.2s ease;
}

.app-navbar .nav-link.active,
.app-navbar .nav-link:hover {
    color: #ffffff;
}

.app-navbar .nav-link.active::after {
    content: "";
    position: absolute;
    inset-inline: 0;
    bottom: -6px;
    height: 3px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.8);
}

.brand-highlight {
    margin-left: 0.15rem;
    color: #ffffff;
    font-weight: 700;
}

.theme-toggle {
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.theme-toggle:hover {
    border-color: rgba(255, 255, 255, 0.75);
    transform: translateY(-1px);
    background: rgba(15, 23, 42, 0.18);
}

.theme-toggle i.bi-sun {
    color: #facc15;
}

/* Cards & surfaces */
.card,
.app-card {
    border: none;
    border-radius: 18px;
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
    transition: transform 0.2s ease, box-shadow 0.25s ease, border-color 0.2s ease;
}

.card:hover,
.app-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.card-header {
    background: transparent;
    border-bottom-color: var(--color-border);
    font-weight: 600;
    color: var(--color-text);
}

.card-subtitle {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
}

.text-muted-soft {
    color: var(--color-text-muted) !important;
}

.divider-soft {
    border-color: var(--color-border);
}

/* Stat cards */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
}

.stat-card {
    background: linear-gradient(140deg, rgba(37, 99, 235, 0.12) 0%, rgba(13, 148, 136, 0.08) 100%);
    border: 1px solid rgba(37, 99, 235, 0.18);
    border-radius: 18px;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .stat-card {
    background: linear-gradient(140deg, rgba(59, 130, 246, 0.18) 0%, rgba(13, 148, 136, 0.15) 90%);
    border-color: rgba(59, 130, 246, 0.28);
}

.stat-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.28), transparent 55%);
    opacity: 0.75;
    pointer-events: none;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    position: relative;
    z-index: 1;
}

[data-theme="dark"] .stat-value {
    color: #93c5fd;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    position: relative;
    z-index: 1;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--color-surface-muted);
    color: var(--color-primary);
}

[data-theme="dark"] .chip {
    background: rgba(59, 130, 246, 0.12);
    color: #bfdbfe;
}

/* Buttons */
.btn-primary,
.btn-primary:hover,
.btn-primary:focus {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

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

.btn-outline-primary:hover {
    background: rgba(37, 99, 235, 0.12);
    border-color: var(--color-primary);
}

.btn-soft {
    background: var(--color-surface-muted);
    color: var(--color-primary);
    border: none;
}

.btn-soft:hover {
    background: rgba(37, 99, 235, 0.12);
    color: var(--color-primary-dark);
}

/* Forms */
.form-control,
.form-select,
.form-textarea {
    background-color: var(--color-surface);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 0.6rem 0.9rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: rgba(37, 99, 235, 0.65);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
    background-color: rgba(255, 255, 255, 0.04);
    border-color: var(--color-border);
    color: var(--color-text);
}

.form-label {
    font-weight: 500;
    color: var(--color-text-muted);
}

.invalid-feedback {
    font-weight: 500;
}

/* Messages */
.app-messages .alert {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

[data-theme="dark"] .app-messages .alert {
    background: rgba(255, 255, 255, 0.05);
}

/* Dashboard specifics */
.analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.analysis-card {
    border-radius: 18px;
    padding: 1.4rem;
    border: 1px solid var(--color-border);
}

.analysis-card .badge {
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.analysis-card .card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

.side-panel {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.list-card {
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 1.2rem;
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.list-card-item + .list-card-item {
    border-top: 1px solid var(--color-border);
    margin-top: 0.85rem;
    padding-top: 0.85rem;
}

.badge-soft {
    background: rgba(37, 99, 235, 0.12);
    color: var(--color-primary);
    border-radius: 999px;
    font-weight: 500;
    padding: 0.25rem 0.65rem;
    font-size: 0.75rem;
}

[data-theme="dark"] .badge-soft {
    background: rgba(59, 130, 246, 0.12);
    color: #bfdbfe;
}

.badge-soft-success {
    background: rgba(16, 185, 129, 0.15);
    color: #047857;
}

[data-theme="dark"] .badge-soft-success {
    background: rgba(16, 185, 129, 0.18);
    color: #6ee7b7;
}

/* PNCP results */
.pncp-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.9rem;
    margin-bottom: 1.25rem;
}

.pncp-result-card {
    border: 1px solid var(--color-border);
    border-radius: 18px;
    padding: 1.4rem;
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.pncp-result-card:hover {
    border-color: rgba(37, 99, 235, 0.45);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.pncp-result-card.border-primary {
    border-color: rgba(37, 99, 235, 0.65) !important;
    box-shadow: var(--shadow-hover);
}

.pncp-result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.pncp-item-select {
    width: 1.2rem;
    height: 1.2rem;
    accent-color: var(--color-primary);
}

.pncp-count {
    font-weight: 600;
    color: var(--color-text-muted);
}

.schedule-card {
    border: 1px dashed var(--color-border);
    border-radius: 16px;
    padding: 1.2rem;
    background: var(--color-surface-muted);
}

/* Proposal form */
.proposal-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.proposal-total-chip {
    font-size: 1.05rem;
    font-weight: 600;
    background: rgba(37, 99, 235, 0.12);
    color: var(--color-primary);
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
}

[data-theme="dark"] .proposal-total-chip {
    background: rgba(37, 99, 235, 0.22);
    color: #bfdbfe;
}

.item-card {
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 1rem;
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
}

.item-card:not(:last-child) {
    margin-bottom: 1rem;
}

.item-toolbar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: flex-end;
}

.total-display {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* Proposal list */
.proposal-table thead {
    background: var(--color-surface-muted);
    color: var(--color-text);
    border-radius: 12px;
}

.proposal-table tbody tr {
    transition: background 0.2s ease;
}

.proposal-table tbody tr:hover {
    background: rgba(37, 99, 235, 0.07);
}

/* PNCP saved search detail */
.opportunity-card {
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 1rem;
    margin-bottom: 1rem;
    background: var(--color-surface);
}

.opportunity-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.timeline {
    border-left: 2px solid var(--color-border);
    padding-left: 1rem;
    margin-left: 0.5rem;
}

.timeline-item {
    position: relative;
    padding-bottom: 1rem;
}

.timeline-item::before {
    content: "";
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-primary);
    position: absolute;
    left: -1.45rem;
    top: 0.3rem;
}

/* Tables and lists */
.list-group-item {
    background: transparent;
    border-color: var(--color-border);
}

.table > :not(caption) > * > * {
    border-color: var(--color-border);
}

/* Responsive helpers */
@media (max-width: 991.98px) {
    .app-navbar .nav-link.active::after {
        display: none;
    }
}

@media (max-width: 767.98px) {
    .proposal-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .pncp-actions {
        flex-direction: column;
        align-items: stretch;
    }
}