/* Button components - All button variants and interactive controls */

/* T024-T032: Base button styles with modern design tokens */

/* Base button foundation */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    font-family: inherit;
    line-height: 1;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-in-out-smooth);
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

/* T024, T026: Primary button with gradient background and hover effects */
.button-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.button-primary:hover {
    box-shadow: var(--shadow-lg), var(--shadow-colored);
    transform: translateY(-2px);
}

/* T027: Active/pressed states */
.button-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* T025: Secondary button variant */
.button-secondary {
    background: transparent;
    color: var(--color-primary-600);
    border: 2px solid var(--color-primary-500);
}

.button-secondary:hover {
    background: var(--color-primary-50);
    border-color: var(--color-primary-600);
    transform: translateY(-2px);
}

.button-secondary:active {
    transform: translateY(0);
}

/* T025: Tertiary button variant */
.button-tertiary {
    background: transparent;
    color: var(--color-primary-600);
    padding: 0.5rem 1rem;
}

.button-tertiary:hover {
    background: var(--color-primary-50);
}

.button-tertiary:active {
    transform: scale(0.98);
}

/* T028: Ripple effect on click */
.button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, var(--overlay-light) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--duration-fast);
    pointer-events: none;
}

.button:active::before {
    opacity: 1;
}

/* T029: Focus states for keyboard navigation */
.button:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* T030: Loading state */
.button.loading {
    pointer-events: none;
    opacity: 0.7;
}

.button.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* T030: Disabled state */
.button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.button:disabled:hover {
    transform: none;
    box-shadow: var(--shadow-md);
}

/* Button sizes */
.button-sm {
    padding: 0.5rem 1rem;
    font-size: var(--text-sm);
}

.button-lg {
    padding: 1rem 2rem;
    font-size: var(--text-lg);
}


/* View toggle button - Enhanced */
.view-button {
    padding: 0.5rem 1.25rem;
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-weight: var(--font-medium);
    border-radius: 999px;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-in-out-smooth);
    position: relative;
}

.view-button:hover {
    color: var(--color-text-primary);
}

.view-button.active {
    background-color: rgba(var(--primary-rgb, 168, 85, 247), 0.12);
    color: var(--color-primary-700);
    font-weight: var(--font-semibold);
    box-shadow: inset 0 0 0 1px rgba(var(--primary-rgb, 168, 85, 247), 0.3);
}

.view-button:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* Layout switcher buttons - Enhanced */
.layout-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.875rem;
    border: 1px solid rgba(15, 23, 42, 0.12);
    background-color: var(--overlay-heavy);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-in-out-smooth);
}

.layout-button:hover {
    color: var(--color-text-primary);
    border-color: rgba(15, 23, 42, 0.25);
    transform: translateY(-1px);
    box-shadow: 0 10px 25px -15px rgba(15, 23, 42, 0.35);
}

.layout-button.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 15px 30px -20px rgba(var(--primary-rgb, 168, 85, 247), 0.65);
}

.layout-button:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* Save button styles - Enhanced */
.save-button {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1.1rem;
    background: rgba(15, 23, 42, 0.03);
    border: 1px solid rgba(15, 23, 42, 0.15);
    border-radius: 999px;
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-in-out-smooth);
    position: relative;
    z-index: 10;
    box-shadow: 0 10px 20px -15px rgba(15, 23, 42, 0.45);
    text-decoration: none !important;
    pointer-events: auto;
    isolation: isolate;
}

.save-button .save-text {
    display: inline-block;
    vertical-align: middle;
    line-height: 1;
    white-space: nowrap;
}

.save-button:hover {
    background: rgba(var(--primary-rgb, 168, 85, 247), 0.12);
    color: var(--color-primary-700);
    border-color: rgba(var(--primary-rgb, 168, 85, 247), 0.35);
    transform: translateY(-2px);
    box-shadow: 0 18px 35px -20px rgba(var(--primary-rgb, 168, 85, 247), 0.45);
}

.save-button.saved {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 18px 35px -18px rgba(var(--primary-rgb, 168, 85, 247), 0.6);
}

.save-button:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* Details toggle button - Enhanced */
.details-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-in-out-smooth);
    text-decoration: none;
}

.details-toggle:hover {
    background-color: var(--color-bg-base);
    color: var(--color-text-primary);
    border-color: var(--color-border-medium);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.details-toggle:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* Retry button - Enhanced */
.retry-button {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-in-out-smooth);
    box-shadow: var(--shadow-md);
}

.retry-button:hover {
    box-shadow: var(--shadow-lg), var(--shadow-colored);
    transform: translateY(-2px);
}

.retry-button:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.retry-button:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}