/*
 * BIMS 2.0 — MoRTH government theme overlay on top of Bootstrap 5.3.
 *
 * Palette anchors to the national tricolour and a government-blue chrome:
 *   --bims-saffron #FF9933, --bims-white #FFFFFF, --bims-green #138808,
 *   --bims-gov-blue #003366 (deep, used for headers, links, and authority cues).
 *
 * Accessibility commitments (Phase 1 Epic 1.6) preserved:
 *   - WCAG 2.1 AA contrast everywhere — saffron is used only as a decorative
 *     accent/border, never as foreground text on white (it would not meet AA).
 *     Authoritative text uses --bims-gov-blue or near-black on white, which
 *     measure 12.6:1 and 19:1 respectively.
 *   - focus-visible rings on every interactive control.
 *   - Skip-to-content link.
 *   - Inputs and buttons keep at least a 44 × 44 CSS px touch target.
 *
 * The palette is exposed as CSS custom properties so component overrides
 * stay declarative and one-line.
 */

:root {
    --bims-saffron: #FF9933;
    --bims-white: #FFFFFF;
    --bims-green: #138808;
    --bims-success: #198754;
    --bims-success-light: #d1e7dd;
    --bims-gov-blue: #003366;
    --bims-gov-blue-700: #002952;
    --bims-gov-blue-100: #E6EEF7;
    --bims-ink: #1a1a1a;
    --bims-text-muted: #555;
    --bims-error: #b02a37;
    --bims-surface: #ffffff;
    --bims-surface-alt: #f6f8fb;
    --bims-border: #d6dde6;
    --bims-shadow-sm: 0 1px 2px rgba(0, 51, 102, 0.06);
    --bims-shadow-md: 0 4px 12px rgba(0, 51, 102, 0.08);
    --bims-shadow-lg: 0 12px 32px rgba(0, 51, 102, 0.12);
    --bims-focus-ring: 0 0 0 0.2rem rgba(0, 51, 102, 0.35);
    --bims-radius: 0.5rem;
    --bims-radius-lg: 0.75rem;
}

/* ------------------------------------------------------------- typography */

body {
    font-family: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    color: var(--bims-ink);
    background: var(--bims-surface-alt);
    line-height: 1.55;
}

h1, h2, h3, h4, h5, h6,
.display-1, .display-2, .display-3, .display-4, .display-5, .display-6 {
    color: var(--bims-gov-blue);
    font-weight: 600;
    letter-spacing: -0.01em;
}

a {
    color: var(--bims-gov-blue);
    text-decoration-color: rgba(0, 51, 102, 0.35);
    text-underline-offset: 0.15em;
}

a:hover {
    color: var(--bims-gov-blue-700);
    text-decoration-color: var(--bims-gov-blue-700);
}

/* ---------------------------------------------------------------- skip link */

.skip-link {
    position: absolute;
    top: -40px;
    left: 0.5rem;
    background: var(--bims-white);
    color: var(--bims-gov-blue);
    padding: 0.5rem 0.75rem;
    border: 2px solid var(--bims-gov-blue);
    border-radius: 0.25rem;
    z-index: 10000;
    text-decoration: none;
    font-weight: 600;
}

.skip-link:focus,
.skip-link:focus-visible {
    top: 0.5rem;
}

/* -------------------------------------------------------------- focus rings */

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: none;
    box-shadow: var(--bims-focus-ring);
}

/* ----------------------------------------------------------- contrast bumps */

.text-muted,
.form-text {
    color: var(--bims-text-muted) !important;
}

.text-danger,
[asp-validation-for] {
    color: var(--bims-error) !important;
}

/* ----------------------------------------------------------- tricolour bar */

/* Thin saffron/white/green stripe at the very top of the page — a quiet
   reference to the national flag that government portals tend to use. */
.bims-tricolour {
    height: 4px;
    background: linear-gradient(
        to bottom,
        var(--bims-saffron) 0,
        var(--bims-saffron) 33.33%,
        var(--bims-white) 33.33%,
        var(--bims-white) 66.66%,
        var(--bims-green) 66.66%,
        var(--bims-green) 100%
    );
}

/* ------------------------------------------------------- ministry top bar */

.bims-ministry-bar {
    background: var(--bims-gov-blue);
    color: var(--bims-white);
    padding: 0.5rem 0;
    font-size: 0.85rem;
}

.bims-ministry-bar a {
    color: var(--bims-white);
    text-decoration: none;
    opacity: 0.9;
}

.bims-ministry-bar a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* ---------------------------------------------------------------- header */

.bims-header {
    background: var(--bims-white);
    border-bottom: 1px solid var(--bims-border);
    box-shadow: var(--bims-shadow-sm);
}

.bims-header-inner {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
}

.bims-emblem {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--bims-gov-blue-100);
    color: var(--bims-gov-blue);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    flex-shrink: 0;
    border: 2px solid var(--bims-gov-blue);
}

.bims-header-titles {
    line-height: 1.2;
}

.bims-header-ministry {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--bims-text-muted);
    margin-bottom: 0.1rem;
}

.bims-header-brand {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--bims-gov-blue);
    margin: 0;
}

.bims-header-tagline {
    font-size: 0.85rem;
    color: var(--bims-text-muted);
    margin: 0;
    font-style: italic;
}

/* -------------------------------------------------------------- navbar */

.bims-nav {
    background: var(--bims-gov-blue);
    border-top: 3px solid var(--bims-saffron);
    border-bottom: 3px solid var(--bims-green);
}

.bims-nav .navbar-brand,
.bims-nav .nav-link {
    color: var(--bims-white) !important;
    font-weight: 500;
    padding-block: 0.75rem;
}

.bims-nav .nav-link:hover,
.bims-nav .nav-link:focus {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 0.25rem;
}

.bims-nav .nav-link i {
    margin-right: 0.35rem;
    opacity: 0.85;
}

/* ----------------------------------------------------------------- hero */

.bims-hero {
    position: relative;
    color: var(--bims-white);
    background:
        linear-gradient(135deg, rgba(0, 51, 102, 0.92) 0%, rgba(0, 41, 82, 0.96) 100%),
        repeating-linear-gradient(
            90deg,
            transparent 0,
            transparent 80px,
            rgba(255, 255, 255, 0.04) 80px,
            rgba(255, 255, 255, 0.04) 120px
        );
    padding: 4rem 0 5rem;
    overflow: hidden;
}

/* Decorative highway-lane motif: dashed centre line at the foot of the hero. */
.bims-hero::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 1.25rem;
    height: 4px;
    background: repeating-linear-gradient(
        to right,
        var(--bims-saffron) 0,
        var(--bims-saffron) 32px,
        transparent 32px,
        transparent 56px
    );
    opacity: 0.7;
}

.bims-hero h1 {
    color: var(--bims-white);
    font-size: clamp(1.85rem, 4vw, 2.75rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.bims-hero .lead {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    max-width: 56ch;
}

.bims-hero .btn-primary {
    background: var(--bims-saffron);
    border-color: var(--bims-saffron);
    color: var(--bims-gov-blue-700);
    font-weight: 600;
}

.bims-hero .btn-primary:hover,
.bims-hero .btn-primary:focus {
    background: #ff8a14;
    border-color: #ff8a14;
    color: var(--bims-gov-blue-700);
}

.bims-hero .btn-outline-light:hover {
    color: var(--bims-gov-blue);
}

/* ----------------------------------------------------- cards & sections */

.bims-card {
    background: var(--bims-surface);
    border: 1px solid var(--bims-border);
    border-radius: var(--bims-radius-lg);
    box-shadow: var(--bims-shadow-md);
    overflow: hidden;
}

.bims-card-header {
    background: linear-gradient(180deg, var(--bims-gov-blue-100) 0%, var(--bims-white) 100%);
    border-bottom: 1px solid var(--bims-border);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.bims-card-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bims-gov-blue);
    color: var(--bims-white);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    flex-shrink: 0;
}

.bims-card-title {
    margin: 0;
    font-size: 1.1rem;
    color: var(--bims-gov-blue);
    font-weight: 600;
}

.bims-card-subtitle {
    margin: 0;
    color: var(--bims-text-muted);
    font-size: 0.85rem;
}

.bims-card-body {
    padding: 1.25rem;
}

@media (min-width: 576px) {
    .bims-card-body {
        padding: 1.5rem;
    }
}

/* --------------------------------------------------------- feature grid */

.bims-feature {
    background: var(--bims-surface);
    border: 1px solid var(--bims-border);
    border-radius: var(--bims-radius);
    padding: 1.25rem;
    height: 100%;
    transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.bims-feature:hover {
    transform: translateY(-2px);
    box-shadow: var(--bims-shadow-md);
    border-color: var(--bims-gov-blue);
}

.bims-feature-icon {
    width: 44px;
    height: 44px;
    border-radius: 0.5rem;
    background: var(--bims-gov-blue-100);
    color: var(--bims-gov-blue);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.bims-feature h3 {
    font-size: 1.05rem;
    margin-bottom: 0.35rem;
}

.bims-feature p {
    color: var(--bims-text-muted);
    font-size: 0.92rem;
    margin: 0;
}

/* ----------------------------------------------------------- trust strip */

.bims-trust {
    background: var(--bims-surface);
    border: 1px solid var(--bims-border);
    border-radius: var(--bims-radius);
    padding: 1rem 1.25rem;
}

.bims-trust-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.88rem;
    color: var(--bims-text-muted);
}

.bims-trust-item i {
    color: var(--bims-green);
    font-size: 1.05rem;
}

/* --------------------------------------------------------- trust badge */

.bims-verify-note {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    padding: 0.75rem 0.9rem;
    background: var(--bims-gov-blue-100);
    border-left: 4px solid var(--bims-gov-blue);
    border-radius: 0.4rem;
    color: var(--bims-gov-blue-700);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.bims-verify-note i {
    color: var(--bims-gov-blue);
    font-size: 1.1rem;
    margin-top: 0.1rem;
    flex-shrink: 0;
}

/* --------------------------------------------------------------- form */

.bims-required {
    color: var(--bims-error);
    margin-left: 0.15rem;
}

.bims-help {
    display: block;
    color: var(--bims-text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.form-control,
.form-select {
    border-radius: var(--bims-radius);
    border-color: var(--bims-border);
    padding: 0.55rem 0.75rem;
    transition: border-color 120ms ease, box-shadow 120ms ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--bims-gov-blue);
    box-shadow: var(--bims-focus-ring);
}

.form-label {
    font-weight: 500;
    color: var(--bims-ink);
}

/* Subtle input affordance — a small leading colour stripe via the
   adjacent .form-label gets crowded; instead, on focus the input itself
   gets the deep-blue ring already. Nothing more needed here. */

/* ----------------------------------------------------------------- buttons */

.btn {
    border-radius: var(--bims-radius);
    font-weight: 500;
}

.btn-primary {
    background: var(--bims-gov-blue);
    border-color: var(--bims-gov-blue);
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--bims-gov-blue-700);
    border-color: var(--bims-gov-blue-700);
}

.btn-success {
    background: var(--bims-green);
    border-color: var(--bims-green);
}

.btn-primary,
.btn-success,
.btn-link,
.btn-outline-primary,
.btn-outline-success,
.btn-outline-light {
    min-height: 44px;
    padding-inline: 1.1rem;
}

/* Loading state — a spinner appears inside the button while the form posts. */
.btn[data-loading="true"] {
    pointer-events: none;
    opacity: 0.85;
}

.btn[data-loading="true"]::after {
    content: "";
    display: inline-block;
    width: 1em;
    height: 1em;
    margin-left: 0.5em;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    vertical-align: -0.15em;
    animation: bims-spin 0.7s linear infinite;
}

@keyframes bims-spin {
    to { transform: rotate(360deg); }
}

/* -------------------------------------------------------------- alerts */

.alert {
    border-radius: var(--bims-radius);
    border: 1px solid transparent;
}

.alert-success {
    background: #e8f5ec;
    border-color: rgba(19, 136, 8, 0.3);
    color: #0c5605;
}

.alert-danger {
    background: #fdecee;
    border-color: rgba(176, 42, 55, 0.3);
}

/* ---------------------------------------------------------- success card */

/* Subtle entrance for the confirmation block — a brief fade-and-rise.
   Government context: dignified, not celebratory. */
.bims-success {
    animation: bims-rise 360ms ease-out both;
}

@keyframes bims-rise {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.bims-success-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--bims-green);
    color: var(--bims-white);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 0.75rem;
    animation: bims-pop 420ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
    animation-delay: 120ms;
}

@keyframes bims-pop {
    0%   { transform: scale(0.4); opacity: 0; }
    100% { transform: scale(1);   opacity: 1; }
}

.bims-bidder-id {
    font-family: ui-monospace, "Cascadia Mono", "JetBrains Mono", Consolas, monospace;
    font-size: 1.5rem;
    font-weight: 700;
    background: rgba(19, 136, 8, 0.12);
    color: #0c5605;
    padding: 0.15rem 0.5rem;
    border-radius: 0.25rem;
}

/* @media (prefers-reduced-motion) suppresses entrance animation for users
   who have asked the OS to minimise non-essential motion. */
@media (prefers-reduced-motion: reduce) {
    .bims-success,
    .bims-success-icon,
    .bims-feature {
        animation: none;
        transition: none;
    }
}

/* ---------------------------------------------------------------- footer */

.bims-footer {
    background: var(--bims-gov-blue-700);
    color: rgba(255, 255, 255, 0.85);
    padding: 2.5rem 0 1.25rem;
    margin-top: 4rem;
}

.bims-footer h2 {
    color: var(--bims-white);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.75rem;
}

.bims-footer a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
}

.bims-footer a:hover,
.bims-footer a:focus {
    color: var(--bims-white);
    text-decoration: underline;
}

.bims-footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: 1rem;
    margin-top: 1.5rem;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ------------------------------------------------------------- mobile */

/* Tighten padding and stack rows on small screens (Indian mobile-first). */
@media (max-width: 575.98px) {
    .bims-hero {
        padding: 2.5rem 0 3rem;
    }

    .bims-header-inner {
        gap: 0.75rem;
    }

    .bims-emblem {
        width: 44px;
        height: 44px;
        font-size: 1.3rem;
    }

    .bims-header-brand {
        font-size: 1.1rem;
    }

    .bims-header-tagline {
        font-size: 0.78rem;
    }
}