/**
 * ExamBlaze Button Styles
 * Primary, secondary, and utility buttons
 * 
 * @package ExamBlaze
 * @version 1.0
 */

/* ========================================
   BASE BUTTON STYLES
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--btn-padding-y) var(--btn-padding-x);
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: none;
    border-radius: var(--btn-radius);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    user-select: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
    z-index: -1;
}

.btn:hover::before {
    left: 100%;
}

.btn:focus {
    outline: 2px solid var(--primary-navy);
    outline-offset: 2px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* ========================================
   BUTTON VARIANTS
   ======================================== */

/* Primary Gold Button (CTA) - Replacing Orange */
.btn-orange {
    background: var(--accent-gold);
    color: var(--primary-navy);
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
    font-weight: 700;
}

.btn-orange:hover {
    background: var(--accent-orange-dark);
    color: var(--text-white);
    box-shadow: 0 8px 30px rgba(245, 158, 11, 0.5), 0 0 20px rgba(245, 158, 11, 0.3);
    transform: translateY(-4px) scale(1.02);
}

.btn-orange:active {
    transform: translateY(-1px) scale(1);
}

/* Primary Navy Button */
.btn-blue {
    background: var(--primary-navy);
    color: var(--text-white);
    box-shadow: 0 4px 14px rgba(15, 118, 110, 0.3);
}

.btn-blue:hover {
    background: var(--primary-blue-light);
    box-shadow: var(--shadow-blue);
    transform: translateY(-2px);
}

.btn-blue:active {
    transform: translateY(0);
}

/* Navy Button */
.btn-navy {
    background: var(--primary-navy);
    color: var(--text-white);
}

.btn-navy:hover {
    background: var(--primary-blue-light);
    transform: translateY(-2px);
}

/* White Button (Outline) */
.btn-white {
    background: var(--bg-white);
    color: var(--accent-gold);
    border: 2px solid var(--accent-gold);
}

.btn-white:hover {
    background: var(--accent-gold);
    color: var(--primary-navy);
    border-color: var(--accent-gold);
}

/* Outline Gold Button */
.btn-outline-orange {
    background: transparent;
    color: var(--accent-gold);
    border: 2px solid var(--accent-gold);
}

.btn-outline-orange:hover {
    background: var(--accent-gold);
    color: var(--primary-navy);
}

/* Outline Navy Button */
.btn-outline-blue {
    background: transparent;
    color: var(--primary-navy);
    border: 2px solid var(--primary-navy);
}

.btn-outline-blue:hover {
    background: var(--primary-navy);
    color: var(--text-white);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--text-dark);
    border: 1px solid var(--border-medium);
}

.btn-ghost:hover {
    background: var(--bg-light);
    border-color: var(--primary-navy);
    color: var(--primary-navy);
}

/* Link Button */
.btn-link {
    background: transparent;
    color: var(--primary-navy);
    padding: 0;
    text-transform: none;
}

.btn-link:hover {
    color: var(--accent-gold);
    text-decoration: underline;
}

/* ========================================
   BUTTON SIZES
   ======================================== */

/* Small Button */
.btn-sm {
    padding: 10px 24px;
    font-size: var(--text-sm);
}

/* Large Button */
.btn-lg {
    padding: 18px 40px;
    font-size: var(--text-lg);
}

/* Extra Large Button */
.btn-xl {
    padding: 20px 48px;
    font-size: var(--text-xl);
}

/* Block Button (Full Width) */
.btn-block {
    display: flex;
    width: 100%;
}

/* ========================================
   BUTTON ICONS
   ======================================== */

.btn i {
    font-size: 18px;
}

.btn-sm i {
    font-size: 16px;
}

.btn-lg i {
    font-size: 20px;
}

.btn-xl i {
    font-size: 22px;
}

/* Icon Only Button */
.btn-icon {
    padding: var(--space-md);
    width: 48px;
    height: 48px;
}

.btn-icon i {
    margin: 0;
}

/* ========================================
   BUTTON GROUPS
   ======================================== */

.btn-group {
    display: inline-flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.btn-group .btn {
    margin: 0;
}

/* ========================================
   SPECIAL BUTTONS
   ======================================== */

/* Pulse Animation (for CTAs) */
.btn-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(245, 158, 11, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0);
    }
}

/* Gradient Button */
.btn-gradient {
    background: var(--gradient-blue);
    color: var(--text-white);
}

.btn-gradient:hover {
    background: var(--gradient-gold);
    color: var(--primary-navy);
}

/* Loading Button */
.btn-loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn-loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid var(--text-white);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spinner 0.6s linear infinite;
}

@keyframes spinner {
    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   RESPONSIVE BUTTONS
   ======================================== */

@media (max-width: 768px) {
    .btn {
        padding: 12px 24px;
        font-size: var(--text-sm);
    }
    
    .btn-lg {
        padding: 14px 32px;
        font-size: var(--text-base);
    }
    
    .btn-xl {
        padding: 16px 36px;
        font-size: var(--text-lg);
    }
    
    /* Stack button groups on mobile */
    .btn-group {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-group .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .btn {
        padding: 10px 20px;
        font-size: 13px;
    }
}