/**
 * Buttons Component
 * Universe Moodle Theme
 *
 * - Pill shape (border-radius: 40px)
 * - Primary, Secondary, Outline variants
 * - Size variants (sm, lg)
 *
 * @package AycaHanim
 */

/* ============== BASE BUTTON ============== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: inherit;
    font-weight: 500;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: none;
    padding: 0.625rem 1.5rem;
    font-size: var(--text-base);
    border-radius: var(--radius-pill);
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 0.2rem var(--input-focus-shadow);
}

.btn:disabled,
.btn.disabled {
    opacity: 0.65;
    pointer-events: none;
}

/* ============== PRIMARY BUTTON ============== */
.btn-primary {
    background-color: var(--btn-primary-color-bg);
    color: var(--btn-primary-color-text);
}

.btn-primary:hover {
    background-color: var(--btn-primary-color-bg-hover);
    color: var(--btn-primary-color-bg-hover-text);
}

.btn-primary:active {
    background-color: var(--primary-color-700);
}

/* ============== SECONDARY BUTTON ============== */
.btn-secondary {
    background-color: var(--btn-secondary-color-bg);
    color: var(--btn-secondary-color-text);
}

.btn-secondary:hover {
    background-color: var(--btn-secondary-color-bg-hover);
    color: var(--btn-secondary-color-bg-hover-text);
}

/* ============== OUTLINE BUTTONS ============== */
.btn-outline-primary {
    background-color: transparent;
    color: var(--main-theme-color);
    border: 2px solid var(--main-theme-color);
}

.btn-outline-primary:hover {
    background-color: var(--main-theme-color);
    color: #fff;
}

.btn-outline-secondary {
    background-color: transparent;
    color: var(--gray-700);
    border: 2px solid var(--gray-400);
}

.btn-outline-secondary:hover {
    background-color: var(--gray-100);
    border-color: var(--gray-500);
}

/* Generic outline button (ebook cards etc.) */
.btn-outline {
    background-color: transparent;
    color: var(--text-color-secondary, #6c757d);
    border: 1px solid var(--border-color, #dee2e6);
    border-radius: 8px;
    padding: 6px 16px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    display: inline-block;
}

.btn-outline:hover {
    border-color: var(--main-theme-color);
    color: var(--main-theme-color);
    background: rgba(79, 92, 204, 0.06);
}

.btn-outline-white {
    background-color: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline-white:hover {
    background-color: var(--card-bg);
    color: var(--gray-900);
    border-color: #fff;
}

/* ============== GHOST / LINK BUTTON ============== */
.btn-link {
    background: none;
    border: none;
    color: var(--main-theme-color);
    padding: 0.5rem 1rem;
}

.btn-link:hover {
    color: var(--primary-color-500);
    text-decoration: underline;
}

.btn-link--clean {
    background: none;
    border: none;
    color: var(--gray-800);
    padding: 0;
    text-decoration: none;
}

.btn-link--clean:hover {
    color: var(--primary-color-500);
}

/* ============== COLOR VARIANTS ============== */
.btn-success {
    background-color: var(--success);
    color: #fff;
}

.btn-success:hover {
    background-color: #015c42;
}

.btn-danger {
    background-color: var(--danger);
    color: #fff;
}

.btn-danger:hover {
    background-color: #c40e0e;
}

.btn-warning {
    background-color: var(--warning);
    color: var(--gray-900);
}

.btn-warning:hover {
    background-color: #e5a730;
}

.btn-dark {
    background-color: var(--gray-900);
    color: #fff;
}

.btn-dark:hover {
    background-color: var(--gray-800);
}

.btn-white {
    background-color: var(--card-bg);
    color: var(--gray-900);
}

.btn-white:hover {
    background-color: var(--gray-100);
}

/* ============== SIZE VARIANTS ============== */
.btn-sm {
    padding: 0.375rem 1rem;
    font-size: var(--text-sm);
}

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

.btn-xl {
    padding: 1.25rem 2.5rem;
    font-size: var(--text-lg);
}

/* ============== BLOCK BUTTON ============== */
.btn-block {
    display: flex;
    width: 100%;
}

/* ============== ICON BUTTON ============== */
.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
}

.btn-icon.btn-sm {
    width: 36px;
    height: 36px;
}

.btn-icon.btn-lg {
    width: 52px;
    height: 52px;
}

/* ============== BUTTON WITH ICON ============== */
.btn i {
    font-size: 0.9em;
}

.btn-icon-left i {
    margin-right: 8px;
}

.btn-icon-right i {
    margin-left: 8px;
}

/* ============== BUTTON GROUP ============== */
.btn-group {
    display: inline-flex;
    gap: 10px;
}

.btn-group-vertical {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ============== LOADING STATE ============== */
.btn-loading {
    position: relative;
    pointer-events: none;
}

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

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

/* ============== DARK MODE TOGGLE ============== */
.btn--darkmode {
    background-color: transparent;
    color: var(--topbar-btn-text);
}

.btn--darkmode:hover {
    background-color: var(--topbar-btn-hover);
    color: var(--main-theme-color);
}