/* SerUP Global Styles */
:root {
    --bg-main: #0f1115;
    --bg-card: #1a1d24;
    --bg-hover: #232730;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --danger: #ef4444;
    --success: #10b981;
    --border: #2d3139;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body.dark-theme {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-family);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-hover);
}

.hidden {
    display: none !important;
}
.mt-4 {
    margin-top: 1.5rem;
}

.text-muted {
    color: var(--text-muted);
}
.text-center {
    text-align: center;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navbar */
.navbar {
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
}
.brand span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

/* Sponsor Banner */
.sponsor-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: linear-gradient(90deg, #1e1b4b, #312e81);
    color: #fff;
    padding: 0.75rem;
    text-align: center;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
}
.sponsor-banner img {
    height: 24px;
    border-radius: 4px;
}

/* Hero Section */
.hero {
    padding: 4rem 1rem;
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-main) 100%);
    border-bottom: 1px solid var(--border);
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}
.hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.spotlight-box {
    background: var(--bg-main);
    border: 1px solid var(--accent);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: left;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.2);
}
.spotlight-box h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

/* Forms & Buttons */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-muted);
}

input, textarea, select {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-main);
    font-family: inherit;
    transition: border-color 0.2s;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent);
}

.code-textarea {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
    font-size: 0.95rem;
}

.btn-primary {
    background-color: var(--accent);
    color: #fff;
}
.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-danger {
    background-color: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
}
.btn-danger:hover {
    background-color: var(--danger);
    color: #fff;
}

.btn-mod {
    background-color: transparent;
    color: #f59e0b;
    border: 1px solid #f59e0b;
}
.btn-mod:hover {
    background-color: #f59e0b;
    color: #fff;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

.w-100 {
    width: 100%;
}

/* Posts Grid */
.feed {
    margin-top: 2rem;
}
.feed-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.posts-grid {
    display: grid;
    gap: 1.5rem;
}

.post-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s;
}
.post-card:hover {
    border-color: #3b82f644;
}

.post-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.post-meta {
    display: flex;
    flex-direction: column;
}
.post-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}
.post-author {
    font-size: 0.85rem;
    color: var(--text-muted);
}
.post-lang {
    background-color: var(--bg-main);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--accent);
}

.post-body {
    padding: 1.5rem;
    position: relative;
}
.post-desc {
    margin-bottom: 1rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}
.post-code pre {
    margin: 0;
    border-radius: 6px;
    background-color: var(--bg-main) !important;
    border: 1px solid var(--border);
}

.post-footer {
    padding: 1rem 1.5rem;
    background-color: #12141a;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
.modal-content {
    width: 100%;
    max-width: 400px;
    position: relative;
}
.close-modal {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1.5rem;
}
.auth-tabs button {
    flex: 1;
    background: none;
    border: none;
    padding: 0.75rem;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    transition: color 0.2s, border-bottom 0.2s;
}
.auth-tabs button.active {
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
}

/* Toasts */
#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
}
.toast {
    background-color: var(--bg-card);
    border-left: 4px solid var(--accent);
    color: var(--text-main);
    padding: 1rem;
    margin-bottom: 0.5rem;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    animation: slideIn 0.3s ease-in-out;
}
.toast.error { border-left-color: var(--danger); }
.toast.success { border-left-color: var(--success); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}