/* ====================================
   NAVIGATION COMPONENTS
   Nav buttons, slide counter, etc.
   ==================================== */

/* ===== NAVIGATION BUTTONS ===== */
.nav-controls {
    position: fixed;
    top: 50%;
    right: var(--space-lg);
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    z-index: var(--z-dropdown);
}

.nav-btn {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 2px solid var(--glass-border);
    color: var(--green-lime);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(50, 205, 50, 0.2);
    transform: translate(-50%, -50%);
    transition: width var(--transition-base), height var(--transition-base);
}

.nav-btn:hover::before {
    width: 100%;
    height: 100%;
}

.nav-btn:hover {
    border-color: var(--green-lime);
    box-shadow: var(--shadow-glow-md);
    transform: scale(1.1);
}

.nav-btn:active {
    transform: scale(0.95);
}

.nav-btn.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

.nav-btn svg {
    width: 24px;
    height: 24px;
    position: relative;
    z-index: 1;
}

/* ===== SLIDE COUNTER ===== */
.slide-counter {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: var(--weight-bold);
    color: var(--text-secondary);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    border: 1px solid var(--glass-border);
    z-index: var(--z-dropdown);
    letter-spacing: 0.05em;
}

.slide-counter .current {
    color: var(--green-lime);
    font-size: var(--text-2xl);
    font-weight: var(--weight-black);
}

.slide-counter .separator {
    margin: 0 var(--space-xs);
    opacity: 0.5;
}

.slide-counter .total {
    opacity: 0.7;
}

/* ===== SKIP NAV (Accessibility) ===== */
.skip-nav {
    position: fixed;
    top: -100px;
    left: var(--space-lg);
    background: var(--green-lime);
    color: var(--bg-darkest);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: var(--weight-semibold);
    z-index: var(--z-modal);
    transition: top var(--transition-base);
}

.skip-nav:focus {
    top: var(--space-lg);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .nav-controls {
        right: var(--space-md);
    }

    .nav-btn {
        width: 48px;
        height: 48px;
    }

    .nav-btn svg {
        width: 20px;
        height: 20px;
    }

    .slide-counter {
        top: var(--space-md);
        right: var(--space-md);
        font-size: var(--text-base);
        padding: var(--space-xs) var(--space-md);
    }

    .slide-counter .current {
        font-size: var(--text-xl);
    }
}