/* ============================================
   BUTTON COMPONENTS
   ============================================ */

/* ===== BASE BUTTON ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-full);
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    transition: all var(--transition-bounce);
    cursor: pointer;
    border: none;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    min-height: 40px;
    min-width: 80px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transition: left var(--transition);
    pointer-events: none;
}

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

.btn:active {
    transform: scale(0.98);
}

/* ===== VARIANT: Primary ===== */
.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.4);
}

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

/* ===== VARIANT: Secondary ===== */
.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

/* ===== VARIANT: Success ===== */
.btn-success {
    background: var(--gradient-success);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

/* ===== VARIANT: Danger ===== */
.btn-danger {
    background: var(--gradient-danger);
    color: white;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.4);
}

/* ===== VARIANT: Warning ===== */
.btn-warning {
    background: var(--gradient-warning);
    color: white;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4);
}

/* ===== VARIANT: Ghost ===== */
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
}

.btn-ghost:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    transform: translateY(-2px);
}

/* ===== VARIANT: Link ===== */
.btn-link {
    background: transparent;
    color: var(--clr-primary);
    padding: 0;
    min-width: auto;
    min-height: auto;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.btn-link:hover {
    color: var(--clr-secondary);
    transform: none;
}

/* ===== SIZES ===== */
.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    min-height: 32px;
    min-width: 60px;
}

.btn-lg {
    padding: var(--space-3) var(--space-8);
    font-size: var(--text-base);
    min-height: 48px;
    min-width: 120px;
}

.btn-xl {
    padding: var(--space-4) var(--space-10);
    font-size: var(--text-lg);
    min-height: 56px;
    min-width: 140px;
}

/* ===== ICON ONLY ===== */
.btn-icon {
    padding: 0;
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    border-radius: var(--radius-full);
}

.btn-icon-sm {
    width: 32px;
    height: 32px;
    min-width: 32px;
    min-height: 32px;
}

.btn-icon-lg {
    width: 48px;
    height: 48px;
    min-width: 48px;
    min-height: 48px;
}

/* ===== DISABLED ===== */
.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn:disabled::before,
.btn.disabled::before {
    display: none;
}

/* ===== LOADING ===== */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ===== ACTION BUTTON ===== */
.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-6) var(--space-4);
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    cursor: pointer;
    transition: all var(--transition-bounce);
    border: 1px solid var(--border-color);
    min-height: 160px;
    width: 100%;
}

.action-btn:hover {
    transform: translateY(-6px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
}

.action-btn .action-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    color: white;
    transition: transform var(--transition);
}

.action-btn:hover .action-icon {
    transform: scale(1.08) rotate(5deg);
}

.action-btn .action-text {
    font-weight: var(--font-bold);
    font-size: var(--text-sm);
    color: var(--text-primary);
}

/* Action Icon Variants */
.action-icon.primary {
    background: var(--gradient-primary);
    box-shadow: 0 8px 18px -6px rgba(79, 70, 229, 0.4);
}
.action-icon.success {
    background: var(--gradient-success);
    box-shadow: 0 8px 18px -6px rgba(16, 185, 129, 0.4);
}
.action-icon.warning {
    background: var(--gradient-warning);
    box-shadow: 0 8px 18px -6px rgba(245, 158, 11, 0.4);
}
.action-icon.danger {
    background: var(--gradient-danger);
    box-shadow: 0 8px 18px -6px rgba(239, 68, 68, 0.4);
}
.action-icon.info {
    background: var(--gradient-info);
    box-shadow: 0 8px 18px -6px rgba(59, 130, 246, 0.4);
}
.action-icon.secondary {
    background: var(--gradient-secondary);
    box-shadow: 0 8px 18px -6px rgba(139, 92, 246, 0.4);
}

/* ============================================
   FILTER BUTTONS (Watchlist)
   ============================================ */
.filter-btn {
    padding: var(--space-2) var(--space-5);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    min-height: 36px;
}

.filter-btn:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
    border-color: var(--border-color);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.filter-btn.active::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transform: rotate(45deg) translateX(-100%);
    animation: buttonShine 3s infinite;
}

@keyframes buttonShine {
    0% { transform: rotate(45deg) translateX(-100%); }
    20% { transform: rotate(45deg) translateX(100%); }
    100% { transform: rotate(45deg) translateX(100%); }
}

/* ============================================
   THEME TOGGLE
   ============================================ */
.theme-toggle {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition);
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    transform: rotate(15deg) scale(1.05);
    color: var(--text-primary);
}

/* ============================================
   FLOATING ACTION BUTTON
   ============================================ */
.floating-add-anime {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: var(--z-toast);
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--gradient-primary);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 12px 28px -8px rgba(79, 70, 229, 0.5);
    transition: all var(--transition-bounce);
    animation: floatGlowPulse 2s ease-in-out infinite;
}

.floating-add-anime::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.35), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
    z-index: -1;
}

.floating-add-anime:hover::before {
    opacity: 1;
}

.floating-add-anime i {
    font-size: var(--text-2xl);
    color: white;
    transition: transform var(--transition-bounce);
}

.floating-add-anime:hover {
    transform: scale(1.08) translateY(-4px);
    box-shadow: 0 20px 32px -12px rgba(79, 70, 229, 0.6);
}

.floating-add-anime:hover i {
    transform: rotate(90deg) scale(1.05);
}

.floating-add-anime:active {
    transform: scale(0.96);
    transition: transform 0.08s linear;
}

.floating-add-tooltip {
    position: absolute;
    right: 75px;
    background: var(--bg-card);
    backdrop-filter: var(--blur-lg);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transform: translateX(12px);
    transition: all var(--transition);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.floating-add-tooltip i {
    margin-right: var(--space-1);
    font-size: var(--text-xs);
    color: var(--clr-secondary);
}

.floating-add-anime:hover .floating-add-tooltip {
    opacity: 1;
    transform: translateX(0);
}

@keyframes floatGlowPulse {
    0% {
        box-shadow: 0 8px 20px -4px rgba(79, 70, 229, 0.4), 0 0 0 0 rgba(139, 92, 246, 0.3);
    }
    50% {
        box-shadow: 0 12px 28px -6px rgba(79, 70, 229, 0.6), 0 0 0 4px rgba(139, 92, 246, 0.15);
    }
    100% {
        box-shadow: 0 8px 20px -4px rgba(79, 70, 229, 0.4), 0 0 0 0 rgba(139, 92, 246, 0);
    }
}

/* ============================================
   RESPONSIVE BUTTONS
   ============================================ */
@media (max-width: 768px) {
    .action-btn {
        flex-direction: row !important;
        padding: var(--space-3) var(--space-4) !important;
        min-height: auto !important;
        gap: var(--space-4) !important;
    }
    
    .action-btn .action-icon {
        width: 48px !important;
        height: 48px !important;
        font-size: var(--text-lg) !important;
    }
    
    .floating-add-anime {
        width: 52px !important;
        height: 52px !important;
        bottom: 20px !important;
        right: 20px !important;
    }
    
    .floating-add-anime i {
        font-size: var(--text-xl) !important;
    }
}

@media (max-width: 480px) {
    .floating-add-anime {
        width: 48px !important;
        height: 48px !important;
        bottom: 16px !important;
        right: 16px !important;
    }
    
    .floating-add-anime i {
        font-size: var(--text-lg) !important;
    }
}