/* Modern CSS variables and reset */
:root {
    --bg-color: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.1);
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --glass-blur: blur(12px);
    --transition-speed: 0.3s;
    --bg-gradient-start: #1e293b;
    --card-hover-bg: rgba(40, 55, 75, 0.8);
    --badge-bg: rgba(255, 255, 255, 0.1);
    --title-color: #e2e8f0;
    --url-hover-color: #cbd5e1;
}

[data-theme="light"] {
    --bg-color: #f1f5f9;
    --text-main: #0f172a;
    --text-muted: #475569;
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-border: rgba(0, 0, 0, 0.1);
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-gradient-start: #e2e8f0;
    --card-hover-bg: rgba(255, 255, 255, 0.95);
    --badge-bg: rgba(0, 0, 0, 0.05);
    --title-color: #0f172a;
    --url-hover-color: #1e293b;
}

body {
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: radial-gradient(circle at top left, var(--bg-gradient-start), var(--bg-color));
    background-attachment: fixed;
    color: var(--text-main);
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
}

.container {
    max-width: 900px;
    width: 100%;
    animation: fadeIn 0.8s ease-out;
}

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

header {
    text-align: center;
    margin-bottom: 3rem;
    margin-top: 2rem;
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #60a5fa, #a78bfa, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.search-container {
    position: relative;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

#searchInput {
    width: 100%;
    padding: 1.2rem 2rem;
    font-size: 1.1rem;
    border-radius: 9999px;
    border: 1px solid var(--card-border);
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: var(--glass-blur);
    color: var(--text-main);
    outline: none;
    transition: all 0.3s ease;
    box-sizing: border-box;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

#searchInput::placeholder {
    color: var(--text-muted);
}

#searchInput:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
    background: rgba(15, 23, 42, 0.8);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 1.5rem;
    backdrop-filter: var(--glass-blur);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.03), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.project-card:hover::before {
    transform: translateX(100%);
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-hover);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    background: var(--card-hover-bg);
}

.project-title {
    font-size: 1.35rem;
    font-weight: 700;
    word-break: break-word;
    color: var(--title-color);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding-right: 4rem;
    line-height: 1.3;
}

.project-icon {
    color: var(--primary);
    font-size: 1.2rem;
    flex-shrink: 0;
    margin-top: 0.15rem;
}

.project-url {
    font-size: 0.9rem;
    color: var(--text-muted);
    word-break: break-all;
    transition: color 0.3s ease;
}

.project-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-card:hover .project-url {
    color: var(--url-hover-color);
}

.empty-state {
    text-align: center;
    grid-column: 1 / -1;
    padding: 3rem;
    color: var(--text-muted);
    font-size: 1.2rem;
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1000;
}

#themeBtn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-main);
    padding: 0.75rem;
    border-radius: 50%;
    cursor: pointer;
    backdrop-filter: var(--glass-blur);
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

#themeBtn:hover {
    transform: scale(1.1);
    border-color: var(--primary);
}

.theme-icon {
    font-size: 1.25rem;
}

/* Github badge */
.gh-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--badge-bg);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}