/* ========================================
   BUTTON & GROUP COMPONENT SYSTEM
   ======================================== */

/* Base Button Component (from style.css) */
.btn,
button:not([class*="btn-"]):not(.card-list-delete-btn) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background-color: var(--color-primary-muted);
    color: white;
    border-radius: var(--radius-btn);
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn:hover,
button:not([class*="btn-"]):not(.card-list-delete-btn):hover {
    background-color: var(--color-primary-muted-hover);
    transform: translateY(-1px);
}

.btn:active,
button:not([class*="btn-"]):not(.card-list-delete-btn):active {
    transform: translateY(0);
}

/* Material Icon in Buttons */
.btn .material-symbols-outlined {
    font-size: 20px;
}

/* ========================================
   BUTTON GROUPS
   Ensures buttons take logical space
   If next to each other, all match the widest
   ======================================== */
.button-group {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

/* All buttons in a group have equal width, filling full space */
.button-group>* {
    flex: 1 1 0;
    min-width: 0;
    text-align: center;
    justify-content: center;
}

/* For vertical button groups */
.button-group-vertical {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.button-group-vertical>* {
    width: 100%;
}

/* ========================================
   BUTTON SPACERS
   Use to control button width in horizontal groups
   Spacers include gap spacing in calculations
   ======================================== */

/* Base spacer - takes up equal space as buttons + 1 gap */
.button-spacer {
    flex: 1 1 calc(4 * var(--space-3));
    min-width: 0;
    /* Invisible spacer */
    visibility: hidden;
    pointer-events: none;
}

/* Spacer variants for different widths (includes gap in calculation) */
.button-spacer-2 {
    flex: 2 1 calc(8 * var(--space-3));
    min-width: 0;
    visibility: hidden;
    pointer-events: none;
}

.button-spacer-3 {
    flex: 3 1 calc(12 * var(--space-3));
    min-width: 0;
    visibility: hidden;
    pointer-events: none;
}

.button-spacer-4 {
    flex: 4 1 calc(16 * var(--space-3));
    min-width: 0;
    visibility: hidden;
    pointer-events: none;
}

.button-spacer-5 {
    flex: 5 1 calc(20 * var(--space-3));
    min-width: 0;
    visibility: hidden;
    pointer-events: none;
}

/* ========================================
   VARIANT BUTTONS (from cards.css)
   ======================================== */

/* Primary Button (matching sidebar accent) */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: var(--color-primary-muted);
    color: white;
    border-radius: var(--radius-btn);
    font-weight: 500;
    font-size: var(--font-size-base);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: var(--font-family-base);
    box-shadow: 0 4px 12px rgba(108, 99, 255, 0.2);
}

.btn-primary:hover {
    background: var(--color-primary-muted-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(108, 99, 255, 0.3);
}

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

/* Secondary Button (subtle outline) */
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: var(--color-bg-surface);
    color: var(--color-text-main);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-btn);
    font-weight: 500;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: var(--font-family-base);
}

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

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

/* Danger Button (filled, for attention actions) */
.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: var(--color-accent-1);
    color: white;
    border: none;
    border-radius: var(--radius-btn);
    font-weight: 500;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: var(--font-family-base);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent-1) 25%, transparent);
}

.btn-danger:hover {
    background: color-mix(in srgb, var(--color-accent-1) 90%, black);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--color-accent-1) 35%, transparent);
}

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

/* Secondary Danger Button (outline style for Ignore, etc.) */
.btn-danger-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: color-mix(in srgb, var(--color-accent-1) 5%, transparent);
    color: var(--color-accent-1);
    border: 1px solid color-mix(in srgb, var(--color-accent-1) 40%, transparent);
    border-radius: var(--radius-btn);
    font-weight: 500;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: var(--font-family-base);
}

.btn-danger-secondary:hover {
    background: color-mix(in srgb, var(--color-accent-1) 10%, transparent);
    border-color: var(--color-accent-1);
    transform: translateY(-2px);
}

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

/* Success Button (Added for Verve) */
.btn-success {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: var(--color-accent-4);
    color: white;
    border: none;
    border-radius: var(--radius-btn);
    font-weight: 500;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: var(--font-family-base);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent-4) 25%, transparent);
}

.btn-success:hover {
    background: color-mix(in srgb, var(--color-accent-4) 90%, black);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--color-accent-4) 35%, transparent);
}

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

/* LEVEL VARIANTS (for Learn Buttons) */
.btn-level-1 {
    background-color: var(--color-accent-1);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent-1) 25%, transparent);
}

.btn-level-1:hover {
    background-color: color-mix(in srgb, var(--color-accent-1) 90%, black);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--color-accent-1) 35%, transparent);
}

.btn-level-2 {
    background-color: var(--color-accent-2);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent-2) 25%, transparent);
}

.btn-level-2:hover {
    background-color: color-mix(in srgb, var(--color-accent-2) 90%, black);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--color-accent-2) 35%, transparent);
}

.btn-level-3 {
    background-color: var(--color-accent-3);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent-3) 25%, transparent);
    color: var(--color-text-main);
    /* Yellow needs dark text */
}

.btn-level-3:hover {
    background-color: color-mix(in srgb, var(--color-accent-3) 90%, black);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--color-accent-3) 35%, transparent);
}

.btn-level-4 {
    background-color: var(--color-accent-4);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent-4) 25%, transparent);
}

.btn-level-4:hover {
    background-color: color-mix(in srgb, var(--color-accent-4) 90%, black);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--color-accent-4) 35%, transparent);
}

.btn-level-5 {
    background-color: var(--color-accent-5);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent-5) 25%, transparent);
}

.btn-level-5:hover {
    background-color: color-mix(in srgb, var(--color-accent-5) 90%, black);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--color-accent-5) 35%, transparent);
}

.btn-level-6 {
    background-color: var(--color-accent-6);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--color-accent-6) 25%, transparent);
}

.btn-level-6:hover {
    background-color: color-mix(in srgb, var(--color-accent-6) 90%, black);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--color-accent-6) 35%, transparent);
}