/* RESET + LAYOUT */
html, body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    display: flex;
    flex-direction: column;
    background: #f2f2f5;
}

.dark body {
    background: #0e0e10;
}

/* PAGE WRAPPER */
.page-content {
    flex: 1;
    padding: 30px 20px 60px;
}

/* HEADER */
.header {
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    background: rgba(255, 255, 255, 0.55);
    border-bottom: 1px solid rgba(0,0,0,0.1);
    padding: 10px 0;
    position: sticky;
    top: 0;
    z-index: 999;
}

.dark .header {
    background: rgba(20, 20, 20, 0.55);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

/* NAVIGATION */
.nav a {
    margin-right: 20px;
    text-decoration: none;
    font-weight: 500;
    color: #333;
}

.dark .nav a {
    color: #e5e5e5;
}

/* BUTTONS */
.btn {
    padding: 8px 14px;
    border-radius: 10px;
    display: inline-block;
    text-decoration: none;
}

.btn.primary {
    background: #5b5bff;
    color: white;
}

.dark .btn.primary {
    background: #7878ff;
}

.btn.secondary {
    background: #ddd;
    color: #333;
}

.dark .btn.secondary {
    background: #3a3a3a;
    color: white;
}

.btn.danger {
    background: #ff6b6b;
    color: white;
}

/* GLASS CARDS (Version B EXACT STYLE) */
.card.glassy, .glassy {
    background: rgba(255,255,255,0.45);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    border-radius: 18px;
    padding: 22px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.07);
}

.dark .card.glassy, 
.dark .glassy {
    background: rgba(25,25,25,0.55);
    box-shadow: 0 6px 22px rgba(0,0,0,0.45);
}

/* GRID (restored from version B – 4 cards max width) */
.grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 25px;
}

/* FOOTER */
footer {
    margin-top: auto;
    text-align: center;
    padding: 20px 0;
    opacity: 0.6;
    font-size: 14px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    background: rgba(255,255,255,0.45);
}

.dark footer {
    background: rgba(20,20,20,0.45);
}