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

:root {
    --background: #000000;
    --foreground: #ffffff;
    --accent: #ffffff;
    --accent-secondary: #1d9bf0;
    /* Twitter Blue for legacy feel */
    --border: #2f3336;
    --card-bg: #16181c;
    --text-muted: #71767b;
}

body {
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.5;
    overflow-x: hidden;
}

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

/* Header & Nav */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -1px;
    text-decoration: none;
    color: white;
}

.logo span {
    color: var(--text-muted);
    font-weight: 400;
}

.nav-links a {
    text-decoration: none;
    color: #eff3f4;
    font-size: 0.95rem;
    font-weight: 600;
    margin-left: 2rem;
    transition: opacity 0.2s;
}

.nav-links a:hover {
    opacity: 0.7;
}

/* Hero Section */
.hero {
    padding: 160px 0 80px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.hero h1 {
    font-size: clamp(2.2rem, 8vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

/* Buttons */
.btn-premium {
    display: inline-block;
    padding: 0.9rem 2rem;
    border-radius: 9999px;
    font-weight: 700;
    text-decoration: none;
    color: #000;
    background: #fff;
    transition: all 0.2s;
    border: 1px solid #fff;
}

.btn-premium:hover {
    background: #e6e6e6;
}

.btn-secondary {
    display: inline-block;
    padding: 0.9rem 2rem;
    border-radius: 9999px;
    font-weight: 700;
    text-decoration: none;
    color: #fff;
    border: 1px solid var(--border);
    margin-left: 1rem;
    transition: background 0.2s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Cards */
.glass-card {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    transition: background 0.2s;
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.02);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 4rem;
}

/* Blog List */
.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
}

.post-card {
    border-bottom: 1px solid var(--border);
    padding: 2rem 0;
    border-radius: 0;
    border-left: 0;
    border-right: 0;
}

.post-card .meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.post-card h2 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

/* Footer */
footer {
    padding: 60px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.footer-nav a {
    color: inherit;
    text-decoration: none;
}

.footer-nav a:hover {
    text-decoration: underline;
}

.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #fff;
    color: #000;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.15);
    z-index: 1000;
    text-decoration: none;
    transition: transform 0.2s;
}

.whatsapp-float:hover {
    transform: scale(1.1);
}

@media (max-width: 640px) {
    .btn-secondary {
        margin-left: 0;
        margin-top: 1rem;
        width: 100%;
    }

    .btn-premium {
        width: 100%;
    }
}