/* ========================================== */
/* ObriyX Presentations - Buttons & Navigation */
/* CTA buttons, navigation buttons, and interactions */
/* ========================================== */

/* ---- CTA Buttons ---- */

.cta-button {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-dark);
    padding: 0.8rem 2rem;
    border-radius: var(--border-radius);
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
    border: none;
    font-family: 'Orbitron', sans-serif;
    display: inline-block;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.5);
}

body.light-mode .cta-button {
    color: white;
}

/* ---- Button Groups ---- */

.button-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: var(--padding-md);
}

/* ---- Navigation Buttons ---- */

.nav-button {
    position: fixed;
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-family: 'Orbitron', sans-serif;
    z-index: 100;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-button:hover {
    background: rgba(0, 212, 255, 0.2);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

body.light-mode .nav-button {
    background: rgba(69, 129, 142, 0.1);
    border-color: var(--primary-color);
}

body.light-mode .nav-button:hover {
    background: rgba(69, 129, 142, 0.2);
    box-shadow: 0 0 15px rgba(69, 129, 142, 0.3);
}

/* ---- Back & PDF Buttons ---- */

.back-button,
.pdf-button {
    position: fixed;
    background: transparent;
    color: var(--primary-color);
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-family: 'Orbitron', sans-serif;
    z-index: 100;
    font-size: 0.9rem;
    font-weight: 600;
    transition: opacity var(--transition-fast), text-shadow var(--transition-fast), color var(--transition-fast);
}

.back-button:hover,
.pdf-button:hover {
    opacity: 0.7;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

body.light-mode .back-button:hover,
body.light-mode .pdf-button:hover {
    text-shadow: 0 0 10px rgba(69, 129, 142, 0.5);
}

.back-button {
    top: 2rem;
    left: 2rem;
}

.pdf-button {
    bottom: 2rem;
    left: 2rem;
}

/* ---- Theme Toggle Button ---- */

.theme-toggle-slide {
    position: fixed;
    top: 2rem;
    right: 5rem;
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 100;
    font-weight: 600;
    transition: border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.theme-toggle-slide:hover {
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

body.light-mode .theme-toggle-slide {
    border-color: var(--primary-color);
}

body.light-mode .theme-toggle-slide:hover {
    box-shadow: 0 0 15px rgba(69, 129, 142, 0.3);
}

/* Theme Toggle Icons */
.theme-toggle-slide .theme-icon {
    position: absolute;
    width: 24px;
    height: 24px;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle-slide .sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.theme-toggle-slide .moon-icon {
    opacity: 0;
    transform: rotate(-180deg) scale(0);
}

body.light-mode .theme-toggle-slide .sun-icon {
    opacity: 0;
    transform: rotate(180deg) scale(0);
}

body.light-mode .theme-toggle-slide .moon-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}