/* ==========================================================================
   AMB Projekt Theme Styles
   ========================================================================== */

:root {
    --amb-dark: #1a3a4a;
    --amb-darker: #0f2a38;
    --amb-accent: #2c5f7a;
    --amb-light: #f5f7f9;
    --amb-text: #333333;
    --amb-text-light: #6c757d;
    --amb-white: #ffffff;
    --amb-transition: all 0.3s ease;
}

/* ==========================================================================
   Global
   ========================================================================== */

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--amb-text);
    overflow-x: hidden;
}

::selection {
    background: var(--amb-dark);
    color: var(--amb-white);
}

a {
    color: var(--amb-accent);
    transition: var(--amb-transition);
}

a:hover {
    color: var(--amb-dark);
}

section {
    position: relative;
}

/* ==========================================================================
   Navbar
   ========================================================================== */

.navbar-amb {
    padding: 1rem 0;
    transition: var(--amb-transition);
    background: var(--amb-white);
    z-index: 1000;
}

.navbar-amb.scrolled {
    padding: 0.5rem 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.navbar-brand img {
    height: 50px;
    width: auto;
    transition: var(--amb-transition);
}

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

.navbar-brand .tagline {
    font-size: 0.85rem;
    color: var(--amb-text-light);
    font-style: italic;
    letter-spacing: 0.02em;
}

.navbar-amb .nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--amb-text) !important;
    padding: 0.5rem 1.2rem !important;
    position: relative;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.navbar-amb .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--amb-dark);
    transition: var(--amb-transition);
    transform: translateX(-50%);
}

.navbar-amb .nav-link:hover::after,
.navbar-amb .nav-link.active::after {
    width: 60%;
}

/* ==========================================================================
   About / Hero Section
   ========================================================================== */

.section-about {
    padding: 5rem 0 6rem;
    background: var(--amb-white);
}

.about-card {
    position: relative;
    display: flex;
    border-radius: 0;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    min-height: 350px;
}

.about-content {
    background: var(--amb-dark);
    color: var(--amb-white);
    padding: 3rem 2.5rem;
    flex: 0 0 45%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.about-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
}

.about-content p {
    font-size: 0.95rem;
    line-height: 1.8;
    opacity: 0.9;
}

.about-image {
    flex: 0 0 55%;
    position: relative;
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.about-card:hover .about-image img {
    transform: scale(1.03);
}

/* ==========================================================================
   Projects Section
   ========================================================================== */

.section-projects {
    padding: 6rem 0;
    background: var(--amb-darker);
    color: var(--amb-white);
}

.section-projects .section-title {
    color: var(--amb-white);
}

.section-projects .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--amb-text-light);
    margin-bottom: 3rem;
    letter-spacing: 0.02em;
}

.project-card {
    background: transparent;
    border: none;
    margin-bottom: 2rem;
    transition: var(--amb-transition);
}

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

.project-thumb {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.project-thumb img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .project-thumb img {
    transform: scale(1.05);
}

.project-thumb .overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 42, 56, 0.8), transparent);
    opacity: 0;
    transition: var(--amb-transition);
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
}

.project-card:hover .project-thumb .overlay {
    opacity: 1;
}

.overlay .btn-view {
    color: var(--amb-white);
    border: 1px solid rgba(255, 255, 255, 0.5);
    padding: 0.4rem 1.5rem;
    font-size: 0.85rem;
    border-radius: 2px;
    text-decoration: none;
    transition: var(--amb-transition);
}

.overlay .btn-view:hover {
    background: var(--amb-white);
    color: var(--amb-dark);
}

.project-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-top: 1.25rem;
    letter-spacing: 0.05em;
    color: var(--amb-white);
}

.project-card .project-subtitle {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.5rem;
    margin-bottom: 0.75rem;
}

.project-card .project-desc {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.section-contact {
    padding: 6rem 0;
    background: var(--amb-white);
}

.section-contact .section-title {
    color: var(--amb-dark);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.contact-info p {
    font-size: 0.95rem;
    color: var(--amb-text);
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

.contact-info .contact-desc {
    color: var(--amb-text-light);
    margin-bottom: 2rem;
}

.contact-info .info-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.contact-info .info-item i {
    font-size: 1.2rem;
    color: var(--amb-dark);
    width: 24px;
    text-align: center;
}

/* Contact Form */
.contact-form {
    background: var(--amb-light);
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.05);
}

.contact-form .form-label {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--amb-text);
    margin-bottom: 0.4rem;
}

.contact-form .form-control {
    border: 1px solid #dce1e6;
    border-radius: 4px;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    transition: var(--amb-transition);
    background: var(--amb-white);
}

.contact-form .form-control:focus {
    border-color: var(--amb-dark);
    box-shadow: 0 0 0 0.2rem rgba(26, 58, 74, 0.15);
}

.contact-form textarea.form-control {
    min-height: 130px;
    resize: vertical;
}

.btn-amb {
    background: var(--amb-dark);
    color: var(--amb-white);
    border: 2px solid var(--amb-dark);
    padding: 0.75rem 2.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-radius: 4px;
    transition: var(--amb-transition);
    cursor: pointer;
}

.btn-amb:hover {
    background: transparent;
    color: var(--amb-dark);
}

.btn-amb:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-alert {
    display: none;
    margin-top: 1rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer-amb {
    padding: 2rem 0;
    background: var(--amb-light);
    border-top: 1px solid #e5e9ed;
}

.footer-amb p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--amb-text-light);
    letter-spacing: 0.02em;
}

/* ==========================================================================
   Scroll to Top
   ========================================================================== */

.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    background: var(--amb-dark);
    color: var(--amb-white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--amb-transition);
    z-index: 999;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--amb-accent);
    transform: translateY(-3px);
}

/* ==========================================================================
   Loading Animation
   ========================================================================== */

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 991.98px) {
    .navbar-amb .navbar-collapse {
        background: var(--amb-white);
        padding: 1rem;
        margin-top: 0.5rem;
        border-radius: 8px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .navbar-brand .tagline {
        display: none;
    }
}

@media (max-width: 767.98px) {
    .about-card {
        flex-direction: column;
    }

    .about-content,
    .about-image {
        flex: auto;
    }

    .about-image {
        min-height: 250px;
    }

    .about-content {
        padding: 2rem 1.5rem;
    }

    .about-content h2 {
        font-size: 2rem;
    }

    .section-projects,
    .section-contact {
        padding: 4rem 0;
    }

    .contact-form {
        padding: 1.5rem;
        margin-top: 2rem;
    }

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

@media (max-width: 575.98px) {
    .section-title {
        font-size: 1.5rem;
    }

    .about-content h2 {
        font-size: 1.8rem;
    }
}