/* Button Component Styles - Modern Mobile App Design */
.ui-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    min-height: var(--button-height);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    border: none;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1),
                background-color 0.2s ease,
                border-color 0.2s ease;
    text-decoration: none;
    min-width: var(--button-min-width);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    will-change: transform, box-shadow;
}

.ui-button:disabled,
.ui-button.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
    pointer-events: none;
}

/* Common hover and active states for all buttons */
.ui-button:hover:not(:disabled):not(.disabled) {
    transform: translateY(-1px) scale(1.01);
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.ui-button:active:not(:disabled):not(.disabled) {
    transform: translateY(0) scale(0.98);
    transition: transform 0.08s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.08s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Focus state for accessibility */
.ui-button:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--border-radius-lg);
}

/* Primary Variant - Accent Color */
.ui-button-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    background-color: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 4px 12px var(--color-primary-shadow);
}

.ui-button-primary:hover:not(:disabled):not(.disabled) {
    background: linear-gradient(135deg, var(--color-primary-hover) 0%, var(--color-primary-active) 100%);
    background-color: var(--color-primary-hover);
    box-shadow: var(--shadow-button-hover);
}

.ui-button-primary:active:not(:disabled):not(.disabled) {
    box-shadow: 0 2px 6px var(--color-primary-shadow-light);
}

/* Secondary Variant - Outlined with Accent */
.ui-button-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    box-shadow: none;
}

.ui-button-secondary:hover:not(:disabled):not(.disabled) {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary-hover);
    color: var(--color-primary-hover);
    box-shadow: var(--shadow-sm);
    border-width: 1px;
}

.ui-button-secondary:active:not(:disabled):not(.disabled) {
    box-shadow: none;
    border-width: 1px;
}

/* Secondary Color Variant - Golden/Yellow */
.ui-button-secondary-color {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-hover) 100%);
    background-color: var(--color-secondary);
    color: #1F2937;
    box-shadow: 0 4px 12px rgba(227, 183, 89, 0.25);
}

.ui-button-secondary-color:hover:not(:disabled):not(.disabled) {
    background: linear-gradient(135deg, var(--color-secondary-hover) 0%, var(--color-secondary-active) 100%);
    background-color: var(--color-secondary-hover);
    box-shadow: 0 6px 16px rgba(227, 183, 89, 0.3);
}

.ui-button-secondary-color:active:not(:disabled):not(.disabled) {
    box-shadow: 0 2px 6px rgba(227, 183, 89, 0.25);
}

/* Danger Variant */
.ui-button-danger {
    background: linear-gradient(135deg, var(--color-danger) 0%, var(--color-danger-hover) 100%);
    background-color: var(--color-danger);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.25);
}

.ui-button-danger:hover:not(:disabled):not(.disabled) {
    background-color: var(--color-danger-hover);
    box-shadow: 0 6px 16px rgba(239, 68, 68, 0.3);
}

.ui-button-danger:active:not(:disabled):not(.disabled) {
    box-shadow: 0 2px 6px rgba(239, 68, 68, 0.25);
}

/* Danger Outlined Variant */
.ui-button-danger-outlined {
    background-color: transparent;
    color: var(--color-danger);
    border: 2px solid var(--color-danger);
    box-shadow: none;
}

.ui-button-danger-outlined:hover:not(:disabled):not(.disabled) {
    background-color: var(--color-danger-light);
    border-color: var(--color-danger-hover);
    color: var(--color-danger-hover);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
    border-width: 2.5px;
}

.ui-button-danger-outlined:active:not(:disabled):not(.disabled) {
    box-shadow: 0 2px 6px rgba(239, 68, 68, 0.15);
    border-width: 2px;
}

/* Text/Ghost Variant */
.ui-button-ghost {
    background-color: transparent;
    color: var(--color-primary);
    border: none;
    box-shadow: none;
    padding: var(--spacing-sm) var(--spacing-md);
}

.ui-button-ghost:hover:not(:disabled):not(.disabled) {
    background-color: var(--color-primary-light);
    color: var(--color-primary-hover);
    transform: translateY(-1px) scale(1.01);
}

.ui-button-ghost:active:not(:disabled):not(.disabled) {
    background-color: var(--color-primary-light);
}

/* Link Variant */
.ui-button-link {
    background-color: transparent;
    color: var(--color-primary);
    border: none;
    box-shadow: none;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: underline;
    min-width: auto;
}

.ui-button-link:hover:not(:disabled):not(.disabled) {
    color: var(--color-primary-hover);
    text-decoration: none;
}

.ui-button-link:active:not(:disabled):not(.disabled) {
    color: var(--color-primary-active);
}

/* Button Icon */
.ui-button-icon {
    display: inline-flex;
    align-items: center;
    font-size: 1.125rem;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Micro-interaction: subtle icon movement on press */
.ui-button:active:not(:disabled):not(.disabled) .ui-button-icon {
    transform: scale(0.95);
}

/* Button Text */
.ui-button-text {
    display: inline-block;
    letter-spacing: 0.01em;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Micro-interaction: subtle text movement on press */
.ui-button:active:not(:disabled):not(.disabled) .ui-button-text {
    transform: scale(0.98);
}

/* Ripple Effect - Enhanced */
.ui-button .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    width: 20px;
    height: 20px;
    margin-left: -10px;
    margin-top: -10px;
    will-change: transform, opacity;
}

@keyframes ripple-animation {
    0% {
        transform: scale(0);
        opacity: 0.8;
    }
    50% {
        opacity: 0.6;
    }
    100% {
        transform: scale(4.5);
        opacity: 0;
    }
}

/* Subtle glow effect on hover for filled buttons */
.ui-button-primary:hover:not(:disabled):not(.disabled),
.ui-button-secondary-color:hover:not(:disabled):not(.disabled),
.ui-button-danger:hover:not(:disabled):not(.disabled) {
    filter: brightness(1.05);
}


/* Button Size Variants */
.ui-button-small {
    padding: calc(var(--spacing-xs) * 0.5) var(--spacing-sm);
    min-height: 32px;
    font-size: var(--font-size-sm);
    border-radius: var(--border-radius-md);
}

.ui-button-large {
    padding: var(--spacing-sm) var(--spacing-lg);
    min-height: 48px;
    font-size: var(--font-size-lg);
    border-radius: var(--border-radius-lg);
}