:root {
    --bg: #0f0f0f;
    --panel: #1a1a1a;
    --muted: #9aa0a6;
    --border: #333;
    --accent: #ff7a00;
    --accent-dark: #e66a00;
    --card: #1c1c1c;
    --text: #ffffff;
    --gray-400: #9aa0a6;
    --gray-300: #b0b5ba;
}

* {
    box-sizing: border-box
}

html,
body {
    height: 100%
}

body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* container */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding-left: 16px;
    padding-right: 16px;
}

/* Header */
.site-header {
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    position: fixed;
    inset: 0 auto auto 0;
    width: 100%;
    z-index: 50;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 0;
}

.logo {
    height: 48px;
    display: block
}

/* header actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.search-input {
    background: #222;
    color: var(--text);
    border: 1px solid #2b2b2b;
    padding: 8px 10px;
    border-radius: 999px;
    width: 220px;
    font-size: 14px;
    outline: none;
}

.search-input:focus {
    box-shadow: 0 0 0 3px rgba(255, 122, 0, 0.08);
    border-color: var(--accent)
}

/* auth nav desktop */
.auth-desktop {
    display: flex;
    gap: 12px;
    align-items: center
}

.btn-link {
    background: none;
    border: 0;
    color: var(--gray-400);
    padding: 8px 10px;
    font-size: 14px;
    cursor: pointer;
}

.btn-link:hover {
    color: var(--gray-300);
}

.btn {
    display: inline-block;
    text-decoration: none;
    padding: 10px 16px;
    border-radius: 12px;
    font-weight: 600
}

.btn.primary {
    background: var(--accent);
    color: #fff;
    transition-duration: 100ms;
}

.btn.primary:hover {
    background: var(--accent-dark)
}

.btn.black {
    background: #000;
    transition-duration: 100ms;
    color: #fff;
    border-radius: 12px;
    padding: 10px 18px
}

.btn.black:hover {
    background-color: #222;
}

.btn.white {
    background: #fff;
    color: #000;
    border-radius: 12px;
    padding: 10px 18px
}

/* mobile menu button */
.icon-button {
    background: transparent;
    border: 0;
    color: var(--gray-400);
    cursor: pointer;
    padding: 6px 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center
}

.icon-button i {
    vertical-align: middle
}

/* mobile menu expanded */
.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    background: var(--panel);
}

.mobile-menu.open {
    display: flex
}

.mobile-item {
    background: none;
    border: 0;
    color: var(--text);
    padding: 10px 12px;
    text-align: center;
    border-radius: 10px;
    cursor: pointer
}

.mobile-item.mobile-primary {
    background: var(--accent);
    color: #fff;
    font-weight: 600
}

/* Hero */
.hero {
    padding-top: 100px;
    /* account for fixed header */
    padding-bottom: 56px;
    background-image: url('background.png');
    background-size: cover;
    background-repeat: no-repeat;
    background-position-y: 20%;
    color: #111;
    text-align: center;
}

.hero-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 32px 16px;
    backdrop-filter: blur(10px);
    background: radial-gradient(circle,rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.51) 70%, rgba(247, 247, 247, 0.2) 85%);
    border-radius: 18px;
}

.hero h1 {
    font-size: 36px;
    margin: 0 0 12px;
    
}

.hero p {
    font-size: 16px;
    margin: 0 0 18px;
    color: rgba(0, 0, 0, 0.75);
    
}

.hero-ctas {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap
}

/* Sections */
.section {
    padding: 28px 0
}

.section h2 {
    font-size: 22px;
    margin: 0 0 14px
}

/* Projects grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 16px;
}

.projects-grid.small-grid {
    grid-template-columns: repeat(2, 1fr)
}

@media(min-width:640px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr)
    }

    .projects-grid.small-grid {
        grid-template-columns: repeat(3, 1fr)
    }
}

@media(min-width:900px) {
    .projects-grid {
        grid-template-columns: repeat(4, 1fr)
    }

    .projects-grid.small-grid {
        grid-template-columns: repeat(5, 1fr)
    }
}

/* Project card */
.project-card {
    background: var(--card);
    border-radius: 18px;
    overflow: hidden;
    cursor: pointer;
    transition: transform .18s ease, box-shadow .18s ease;
    display: flex;
    flex-direction: column;
    min-height: 180px;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45)
}

.project-thumb {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block
}

.project-meta {
    padding: 12px
}

.project-title {
    font-size: 16px;
    margin: 0 0 6px
}

.project-author {
    margin: 0;
    color: var(--gray-400);
    font-size: 13px
}

.author-name {
    color: var(--accent)
}

/* utility */
.muted {
    color: var(--gray-400)
}

.error {
    color: #ff6b6b
}

.hidden {
    display: none
}

/* custom scrollbar for containers (like original) */
.projects-grid::-webkit-scrollbar,
.mobile-menu::-webkit-scrollbar {
    height: 8px;
    width: 8px
}

.projects-grid::-webkit-scrollbar-track,
.mobile-menu::-webkit-scrollbar-track {
    background: #222;
    border-radius: 10px
}

.projects-grid::-webkit-scrollbar-thumb,
.mobile-menu::-webkit-scrollbar-thumb {
    background: #555;
    border-radius: 10px
}

.projects-grid::-webkit-scrollbar-thumb:hover,
.mobile-menu::-webkit-scrollbar-thumb:hover {
    background: #888
}

/* small screens adjustments */
@media(max-width:768px) {
    .auth-desktop {
        display: none
    }

    .search-input {
        width: 140px
    }

    .hero h1 {
        font-size: 26px
    }

    .project-thumb {
        height: 140px
    }

    .container {
        padding-left: 12px;
        padding-right: 12px
    }
}

.header-avatar {
    width: 32px;
    display: inline;
    vertical-align: middle;
}