@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700&family=Playfair+Display:wght@700&display=swap');

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-hover: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Outfit', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --primary: #6366f1;
    --primary-hover: #818cf8;
    --bg-body: #0f172a;
    --bg-card: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #cbd5e1;
    --border: #334155;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.5);
    --shadow-hover: 0 20px 25px -5px rgb(0 0 0 / 0.5);
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}

[data-theme="dark"] header {
    background: rgba(15, 23, 42, 0.8);
}

.nav-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.025em;
}

/* Theme Toggle */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 0.5rem;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: var(--bg-card);
    transform: scale(1.1);
}

/* Main Content */
main {
    flex: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
    width: 100%;
}

.hero {
    text-align: center;
    margin-bottom: 4rem;
    animation: fadeIn 0.8s ease-out;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, #a855f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
}

/* Blog Posts */
.post-grid {
    display: grid;
    gap: 2rem;
}

.post-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 2rem;
    transition: var(--transition);
    animation: slideUp 0.6s ease-out forwards;
    opacity: 0;
}

.post-card:nth-child(1) { animation-delay: 0.1s; }
.post-card:nth-child(2) { animation-delay: 0.2s; }

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
}

.post-meta {
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.post-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.post-excerpt {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.btn-read {
    display: inline-flex;
    align-items: center;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.btn-read:hover {
    color: var(--primary-hover);
    gap: 0.5rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    margin-top: 4rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* Mobile */
@media (max-width: 640px) {
    .hero h1 { font-size: 2.5rem; }
    .post-card { padding: 1.5rem; }
}