/* ==========================================================================
   KTK Designed - Components (Nav, Cards, Buttons)
   ========================================================================== */

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--space-md) var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    mix-blend-mode: difference;
}

.brand-logo {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    letter-spacing: 2px;
    font-weight: bold;
}

.nav-links {
    display: flex;
    gap: var(--space-md);
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent-blue);
    transition: width var(--transition-smooth);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 4px;
    border: 1px solid var(--color-border-glass);
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.btn-primary {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-accent-blue);
    border-color: var(--color-accent-blue);
}

.btn-primary:hover {
    background: var(--color-accent-blue);
    color: var(--color-text-primary);
    box-shadow: 0 0 20px var(--color-glow-blue);
}

.btn-whatsapp {
    background: rgba(34, 197, 94, 0.1);
    color: #22C55E;
    border-color: #22C55E;
    border-radius: 50px;
    padding: 0.6rem 1.2rem;
    font-size: 0.75rem;
}

.btn-whatsapp:hover {
    background: #22C55E;
    color: var(--color-bg-primary);
    box-shadow: 0 0 15px rgba(34, 197, 94, 0.3);
}

/* Cards (Glassmorphism) */
.glass-card {
    background: rgba(13, 21, 38, 0.6);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-border-glass);
    border-radius: 12px;
    padding: var(--space-md);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px var(--color-glow-blue);
    border-color: rgba(59, 130, 246, 0.4);
}