/* ============================================================
   BIASHARA BRIDGES LANDING PAGE STYLES
   Bootstrap 5 + Custom Styling with Gold & Navy Theme
   ============================================================ */

/* IMPORTS - Sans-serif font stack */

/* CSS VARIABLES - Brand Colors */
:root {
    --gold-primary: #b49044;
    --gold-bright: #f7b500;
    --navy-dark: #111518;
    --gray-mid: #687279;
    --gray-light: #edeff2;
    --white-bg: #ffffff;
    --brown-text: #714508;
}

/* ============================================================
   1. GLOBAL STYLES
   ============================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--gray-mid);
    background-color: var(--white-bg);
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--navy-dark);
    font-weight: 600;
}

a {
    text-decoration: none;
    transition: all 0.3s ease;
}

/* Text color utilities */
.text-warning {
    color: var(--gold-bright) !important;
}

/* ============================================================
   2. NAVIGATION BAR
   ============================================================ */
.navbar {
    transition: all 0.3s ease;
    padding: 1rem 0;
    background-color: transparent !important;
}

.navbar-dark {
    background-color: transparent !important;
}

#mainNav {
    background-color: transparent !important;
}

#mainNav.navbar-dark {
    background-color: transparent !important;
}

.navbar.bg-white,
#mainNav.bg-white {
    background-color: rgba(255, 255, 255, 0.98) !important;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar.navbar-light {
    background-color: rgba(255, 255, 255, 0.98) !important;
}

.navbar.navbar-scrolled {
    background-color: rgba(255, 255, 255, 0.98) !important;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    padding: 0.5rem 0;
}

.navbar-brand img {
    max-height: 50px;
    transition: all 0.3s ease;
}

.navbar.navbar-scrolled .navbar-brand img {
    max-height: 40px;
}

.navbar-nav .nav-link {
    color: var(--navy-dark);
    font-weight: 500;
    padding: 0.5rem 1rem;
    margin: 0 0.25rem;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gold-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 80%;
}

.navbar-nav .nav-link:hover {
    color: var(--gold-primary);
}

.btn-primary {
    background-color: var(--gold-primary);
    border-color: var(--gold-primary);
    color: white;
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--gold-bright);
    border-color: var(--gold-bright);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(180, 144, 68, 0.3);
}

.btn-outline-primary {
    border-color: var(--gold-primary);
    color: var(--gold-primary);
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

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

/* ============================================================
   3. HERO SECTION
   ============================================================ */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    /* margin-top: 76px; Removed to allow transparent navbar overlay */
}

#heroCarousel,
.carousel-inner,
.carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.carousel-item {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
        rgba(17, 21, 24, 0.85) 0%,
        rgba(180, 144, 68, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    width: 100%;
    padding: 2rem;
}

.hero-title {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 42px;
    font-weight: 700;
    line-height: 1.08;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.25rem;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 1.2s ease-out;
    max-width: 550px;
}

.hero-tagline {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.4;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    animation: fadeInUp 0.8s ease-out;
    text-transform: lowercase;
}

.tagline-line {
    display: inline-block;
    width: 40px;
    height: 2px;
    background-color: #ffffff;
    margin-right: 12px;
}

.hero-cta {
    animation: fadeInUp 1.4s ease-out;
}

.hero-cta .btn {
    margin: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1.1rem;
}

.btn-outline-light {
    border: 2px solid white;
    color: white;
    font-weight: 600;
}

.btn-outline-light:hover {
    background-color: white;
    color: var(--navy-dark);
}

/* Explore Opportunities Button - Gold with White Text */
.btn-explore {
    background-color: var(--gold-primary);
    border-color: var(--gold-primary);
    color: #ffffff !important;
    font-weight: 500;
    font-size: 15px;
    padding: 0.875rem 2rem;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-explore:hover,
.btn-explore:focus {
    background-color: var(--gold-bright);
    border-color: var(--gold-bright);
    color: #ffffff !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(247, 181, 0, 0.4);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.scroll-indicator a {
    color: white;
    font-size: 2rem;
    animation: bounce 2s infinite;
}

.scroll-indicator a:hover {
    color: var(--gold-bright);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* ============================================================
   4. SECTION COMMON STYLES
   ============================================================ */
section {
    padding: 5rem 0;
}

.section-header {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
}

.section-divider {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--gold-primary), var(--gold-bright));
    margin: 1rem auto;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray-mid);
}

/* ============================================================
   5. ABOUT US SECTION
   ============================================================ */
.about-section {
    background-color: var(--white-bg);
}

.registration-info {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-left: 4px solid var(--gold-primary);
}

.office-card {
    transition: all 0.3s ease;
    border-radius: 15px;
    overflow: hidden;
}

.office-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.focus-badge {
    background: white;
    padding: 1.5rem 1rem;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.focus-badge:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.focus-badge i {
    font-size: 2.5rem;
    color: var(--gold-primary);
    margin-bottom: 0.5rem;
}

.focus-badge p {
    margin: 0;
    font-weight: 600;
    color: var(--navy-dark);
}

/* ============================================================
   6. SERVICES SECTION
   ============================================================ */
.services-section {
    background-color: #f8f9fa;
}

.service-card {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border-radius: 15px;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15) !important;
}

.card-img-wrapper {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 25%;
    transition: transform 0.4s ease;
}

.service-card:hover .card-img-wrapper img {
    transform: scale(1.1);
}

.service-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: rgba(180, 144, 68, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

.service-card:hover .service-overlay {
    opacity: 1;
}

.service-overlay i {
    font-size: 2rem;
    color: white;
}

.service-features li {
    padding-left: 0.5rem;
}

.service-features i {
    margin-right: 0.5rem;
}

/* ============================================================
   7. PROJECTS SECTION
   ============================================================ */
.projects-section {
    background-color: var(--white-bg);
}

.project-card {
    transition: all 0.4s ease;
    border-radius: 15px;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2) !important;
}

.project-img-wrapper {
    height: 220px;
}

.project-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.project-card:hover .project-img-wrapper img {
    transform: scale(1.1) rotate(2deg);
}

.project-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    z-index: 2;
}

.project-badge .badge {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
    font-weight: 600;
}

.project-highlights {
    font-size: 0.9rem;
}

.project-highlights i {
    margin-right: 0.5rem;
}

/* ============================================================
   8. PARTNERS SECTION
   ============================================================ */
.partners-section {
    background-color: #f8f9fa;
}

/* ============================================================
   9. WHY CHOOSE US SECTION
   ============================================================ */
.why-choose-section {
    background-color: var(--white-bg);
}

.benefit-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    height: 100%;
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.benefit-icon i {
    transition: all 0.3s ease;
}

.benefit-card:hover .benefit-icon i {
    transform: scale(1.1) rotate(5deg);
}

/* ============================================================
   10. CONTACT SECTION
   ============================================================ */
.contact-section {
    background-color: #f8f9fa;
}

.contact-form-wrapper {
    border-radius: 15px;
}

.contact-form .form-control,
.contact-form .form-select {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    border: 1px solid #dee2e6;
    transition: all 0.3s ease;
}

.contact-form .form-control:focus,
.contact-form .form-select:focus {
    border-color: var(--gold-primary);
    box-shadow: 0 0 0 0.2rem rgba(180, 144, 68, 0.25);
}

.contact-form .form-label {
    font-weight: 600;
    color: var(--navy-dark);
    margin-bottom: 0.5rem;
}

.contact-info-card {
    border-radius: 12px;
    transition: all 0.3s ease;
}

.contact-info-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15) !important;
}

.contact-info-card i {
    transition: transform 0.3s ease;
}

.contact-info-card:hover i {
    transform: scale(1.1);
}

/* ============================================================
   11. RESPONSIVE DESIGN (Mobile-First)
   ============================================================ */

/* Extra Small devices (portrait phones, less than 576px) */
@media (max-width: 575.98px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-cta .btn {
        display: block;
        width: 100%;
        margin: 0.5rem 0;
    }

    .section-title {
        font-size: 2rem;
    }

    section {
        padding: 3rem 0;
    }

    .navbar-brand img {
        max-height: 40px;
    }

    .card-img-wrapper {
        height: 200px;
    }

    .project-img-wrapper {
        height: 180px;
    }
}

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .hero-title {
        font-size: 2.5rem;
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }

    .navbar-nav .nav-link {
        padding: 0.5rem 1.25rem;
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .hero-title {
        font-size: 3.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .hero-title {
        font-size: 4rem;
    }

    .container {
        max-width: 1200px;
    }
}

/* ============================================================
   12. ANIMATIONS & TRANSITIONS
   ============================================================ */
.fade-in {
    animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Smooth transitions for all interactive elements */
button,
a,
.card,
.btn {
    transition: all 0.3s ease;
}

/* ============================================================
   13. UTILITY CLASSES
   ============================================================ */
.bg-gold-primary {
    background-color: var(--gold-primary) !important;
}

.bg-gold-bright {
    background-color: var(--gold-bright) !important;
}

.bg-navy-dark {
    background-color: var(--navy-dark) !important;
}

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

.text-gold-bright {
    color: var(--gold-bright) !important;
}

.text-navy-dark {
    color: var(--navy-dark) !important;
}

/* Shadow utilities */
.shadow-gold {
    box-shadow: 0 4px 15px rgba(180, 144, 68, 0.2) !important;
}

.shadow-gold-lg {
    box-shadow: 0 10px 30px rgba(180, 144, 68, 0.3) !important;
}

/* ============================================================
   14. ACCESSIBILITY IMPROVEMENTS
   ============================================================ */
:focus-visible {
    outline: 2px solid var(--gold-primary);
    outline-offset: 2px;
}

/* Skip to content link for screen readers */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--gold-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-to-content:focus {
    top: 0;
}

/* Ensure sufficient color contrast */
a {
    color: var(--gold-primary);
}

a:hover {
    color: var(--gold-bright);
}

/* ============================================================
   15. PRINT STYLES
   ============================================================ */
@media print {
    .navbar,
    .hero-section,
    .scroll-indicator,
    .contact-form,
    footer {
        display: none;
    }

    section {
        page-break-inside: avoid;
    }

    .card {
        box-shadow: none !important;
        border: 1px solid #ddd;
    }
}