:root {
    --primary: #dc2626;
    --primary-hover: #b91c1c;
    --accent: #facc15;
    --bg-main: #ffffff;
    --bg-alt: #fafafa;
    --text-main: #111827;
    --text-light: #64748b;
    --card-bg: #ffffff;
    --card-border: #e5e7eb;
    --icon-red-bg: #fee2e2;
    --icon-red: #dc2626;
    --icon-yellow-bg: #fef9c3;
    --icon-yellow: #ca8a04;
    --icon-orange-bg: #ffedd5;
    --icon-orange: #ea580c;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Deep Black Dark Mode */
[data-theme="dark"] {
    --bg-main: #000000;
    --bg-alt: #0a0a0a;
    --text-main: #ffffff;
    --text-light: #a3a3a3;
    --card-bg: #0f0f0f;
    --card-border: #262626;
    --icon-red-bg: #450a0a;
    --icon-yellow-bg: #422006;
    --icon-orange-bg: #431407;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

header {
    background-color: var(--card-bg);
    border-bottom: 2px solid var(--primary);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.logo h1 span {
    color: var(--primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.theme-toggle:hover {
    background-color: var(--icon-red-bg);
    color: var(--primary);
}

.github-link {
    color: var(--text-light);
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.github-link:hover {
    color: var(--primary);
}

.hero {
    padding: 5rem 0 4rem;
    text-align: center;
    background: linear-gradient(to bottom, var(--bg-alt), var(--bg-main));
    transition: var(--transition);
}

.hero h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.05em;
}

.search-container {
    max-width: 600px;
    margin: 2rem auto 0;
    position: relative;
    animation: slideUp 0.6s ease-out;
}

.search-input {
    width: 100%;
    padding: 1rem 1.5rem 1rem 3.5rem;
    border-radius: 2rem;
    border: 2px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text-main);
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 10px 15px -3px rgba(220, 38, 38, 0.2);
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    width: 20px;
    height: 20px;
}

.programs {
    padding-bottom: 5rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    padding: 1.5rem;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    animation: fadeIn 0.8s ease-out both;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(220, 38, 38, 0.15);
    border-color: var(--accent);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.card-icon.blue { background-color: var(--icon-red-bg); color: var(--icon-red); }
.card-icon.purple { background-color: var(--icon-yellow-bg); color: var(--icon-yellow); }
.card-icon.orange { background-color: var(--icon-orange-bg); color: var(--icon-orange); }

.card-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.card-content p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.view-all {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9rem;
}

.view-all i {
    width: 16px;
    height: 16px;
    transition: transform 0.2s;
}

.card:hover .view-all i {
    transform: translateX(4px);
}

/* Badge Style */
.badge-new {
    background-color: var(--accent);
    color: #000;
    font-size: 0.7rem;
    font-weight: 800;
    padding: 0.2rem 0.6rem;
    border-radius: 1rem;
    margin-left: 0.75rem;
    text-transform: uppercase;
    display: inline-block;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(250, 204, 21, 0.7); }
    70% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(250, 204, 21, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(250, 204, 21, 0); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* Program Page Styles */
.page-header {
    padding: 3rem 0;
    background: var(--card-bg);
    border-bottom: 1px solid var(--card-border);
    transition: var(--transition);
}

.back-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.back-link:hover {
    color: var(--primary);
}

.file-list-container {
    padding: 3rem 0;
    background-color: var(--bg-alt);
    transition: var(--transition);
}

.file-list {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.file-item {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--card-border);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    animation: fadeIn 0.4s ease-out both;
}

.file-item:last-child {
    border-bottom: none;
}

.file-item:hover {
    background-color: var(--icon-red-bg);
}

.file-icon {
    width: 40px;
    height: 40px;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1.25rem;
}

.file-info {
    flex-grow: 1;
}

.file-name {
    font-weight: 500;
    display: flex;
    align-items: center;
}

.file-meta {
    font-size: 0.8rem;
    color: var(--text-light);
}

.download-icon {
    color: var(--text-light);
}

.file-item:hover .download-icon {
    color: var(--primary);
}

footer {
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid var(--card-border);
    margin-top: auto;
    color: var(--text-light);
    font-size: 0.9rem;
    background-color: var(--bg-alt);
    transition: var(--transition);
}

footer b {
    color: var(--primary);
}

@media (max-width: 640px) {
    .hero h2 {
        font-size: 1.85rem;
    }
    .grid {
        grid-template-columns: 1fr;
    }
}

/* Disco Mode */
@keyframes disco-bg {
    0% { background-color: #ff0000; }
    20% { background-color: #00ff00; }
    40% { background-color: #0000ff; }
    60% { background-color: #ffff00; }
    80% { background-color: #ff00ff; }
    100% { background-color: #00ffff; }
}

@keyframes disco-text {
    0% { color: #ffffff; }
    20% { color: #000000; }
    40% { color: #ffffff; }
    60% { color: #000000; }
    80% { color: #ffffff; }
    100% { color: #000000; }
}

body.disco-mode {
    animation: disco-bg 0.5s infinite !important;
}

body.disco-mode * {
    animation: disco-text 0.5s infinite !important;
    background-color: transparent !important;
    border-color: currentColor !important;
}

body.disco-mode img, 
body.disco-mode .logo-icon,
body.disco-mode .theme-toggle i {
    filter: invert(1) hue-rotate(90deg);
}

/* SFI Mode */
html.sfi-mode {
    --primary: #ffffff !important;
    --primary-hover: #f3f4f6 !important;
    --accent: #ffffff !important;
    --bg-main: #dc2626 !important;
    --bg-alt: #b91c1c !important;
    --text-main: #ffffff !important;
    --text-light: #fca5a5 !important;
    --card-bg: #b91c1c !important;
    --card-border: #f87171 !important;
    --icon-red-bg: #ffffff !important;
    --icon-red: #dc2626 !important;
    --icon-yellow-bg: #ffffff !important;
    --icon-yellow: #dc2626 !important;
    --icon-orange-bg: #ffffff !important;
    --icon-orange: #dc2626 !important;
}

html.sfi-mode body {
    background-color: var(--bg-main) !important;
    color: var(--text-main) !important;
}

html.sfi-mode .logo h1 span,
html.sfi-mode .view-all,
html.sfi-mode .view-all i {
    color: #ffffff !important;
}

html.sfi-mode .card-icon {
    background-color: #ffffff !important;
    color: #dc2626 !important;
}

html.sfi-mode .search-input {
    background-color: #ffffff !important;
    color: #dc2626 !important;
    border-color: #ffffff !important;
}

html.sfi-mode .search-icon {
    color: #dc2626 !important;
}

html.sfi-mode .theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.2) !important;
    color: #ffffff !important;
}