:root {
    /* =========================
   1. First Version Shadows (Dark)
   =========================
    --color-bg-dark: #1b1f17;
    --color-bg-card: #3c3d37;
    --color-bg-light: #697565;
    --color-text-primary: #ecdfcc;
    --color-text-secondary: #d4c9b8; */
    /* =========================
   2. Second Version Shadows (Dark)
   ========================= */
    --color-bg-dark: #1a1613;
    --color-bg-card: #2c241f;
    --color-bg-light: #5c4d43;
    --color-text-primary: #e4d8c6;
    --color-text-secondary: #d6bfa3;
    --color-white: #ffffff;
    --color-bg-base: var(--color-bg-dark);
    /* Navigation Button Backgrounds (derived from --color-bg-card with opacity) */
    --color-btn-nav-bg-opacity-low: rgba(60, 61, 55, 0.5);
    /* Semi-transparent dark green-gray */
    --color-btn-nav-bg-opacity-high: rgba(60, 61, 55, 0.8);
    /* Less transparent dark green-gray on hover */
    /* Font Family */
    --font-family-main: 'Inter', sans-serif;
    /* Primary font for the entire site */

    --width-max-content: 1280px;
    /* Maximum width for main content */
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-main);
    background: var(--color-bg-base);
    color: var(--color-text-primary);
    transition: padding-top 0.3s ease-in-out;
}

p {
    text-align: justify;
}

footer p {
    text-align: center;
}

.content-wrapper {
    max-width: var(--width-max-content);
    margin: 0 auto;
    background-color: var(--color-bg-dark);
}

.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 2rem;
    text-align: center;
}

.section-subtitle {
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
    text-align: left;
}

.section-subsubtitle {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
    text-align: left;
}

.card {
    background-color: var(--color-bg-card);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.project-card-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid var(--color-bg-light);
    border-radius: 0.8rem;
    padding: 0;
    transition: 0.1s ease-in-out, border 0.3s ease;
}

    .project-card-content:hover {
        box-shadow: 0 0 20px var(--color-text-primary);
    }

.project-description {
    text-align: justify;
}

#projects .card video {
    filter: grayscale(25%);
    transition: filter 0.3s ease;
}

#projects .card:hover video {
    filter: grayscale(0%);
}

.btn-primary {
    background-color: var(--color-bg-light);
    color: var(--color-bg-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.2s ease-in-out;
}

    .btn-primary:hover {
        /* background-color: var(--color-text-primary);
    color: var(--color-bg-dark); */
        box-shadow: 0 0 10px var(--color-text-primary);
    }

/* Header specific styles for dynamic resizing */
.main-header {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

    .main-header .nav-title-group .name {
        font-size: 3rem;
    }

    .main-header .nav-title-group .title {
        font-size: 1.5rem;
    }

/* Responsive adjustments */
@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }

    .grid-cols-2 {
        grid-template-columns: 1fr;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-image {
        margin-right: 0;
        margin-bottom: 1.5rem;
    }

    .social-nav-link {
        margin: 0.25rem;
    }

    .main-header .nav-title-group .name {
        font-size: 2.5rem;
    }

    .main-header .nav-title-group .title {
        font-size: 1.25rem;
    }
}

/* Back to top button styles */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 50;
    padding: 0.75rem;
    border-radius: 9999px;
    opacity: 0;
    visibility: hidden;
    line-height: 0;
    background: var(--color-bg-light);
    color: var(--color-white);
    transition: all 300ms;
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

    .back-to-top.active {
        opacity: 1;
        visibility: visible;
    }

    .back-to-top:hover {
        background-color: var(--color-text-primary);
        color: var(--color-bg-dark);
    }

/* NEW: Responsive Navigation Logic */
#mainHeader.fixed-nav {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: var(--width-max-content);
    /* This matches .content-wrapper */
    z-index: 50;
}

/* Portrait Mode: Navigation is static */
@media (orientation: portrait) {
    #mainHeader {
        position: static !important;
        /* Ensure it's not fixed in portrait */
        transform: none !important;
        max-width: none !important;
    }

    body {
        padding-top: 0 !important;
        /* No padding needed when header is static */
    }
}

/* --- Swiper Slider Styles --- */

/* Swiper Pagination Custom Styles */
.swiper-pagination {
    position: absolute;
    bottom: 10px !important;
    left: 0;
    right: 0;
    text-align: center;
}

.swiper-pagination-bullet {
    background: var(--color-bg-light) !important;
    opacity: 0.5 !important;
    border: none !important;
    width: 10px !important;
    height: 10px !important;
    margin: 0 4px !important;
}

.swiper-pagination-bullet-active {
    background: var(--color-text-primary) !important;
    opacity: 1 !important;
}