/* ============================================
   EAD Play - Component Styles
   Botões, Inputs, Cards, Badges, etc.
   ============================================ */

/* ---- Botões ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    cursor: pointer;
    letter-spacing: 0.01em;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::after {
    opacity: 1;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--text-inverse);
    box-shadow: 0 4px 15px rgba(79, 90, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 25px rgba(79, 90, 255, 0.4);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
}

.btn-secondary {
    background: var(--content-surface);
    color: var(--text-primary);
    border: 1.5px solid var(--content-border);
}

.btn-secondary:hover {
    border-color: var(--primary-300);
    color: var(--primary-600);
    background: var(--primary-50);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-500), var(--danger-600));
    color: var(--text-inverse);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-base);
    border-radius: var(--radius-lg);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-xs);
}

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-md);
}

/* ---- Loading spinner no botão ---- */
.btn-loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-loading .btn-text {
    visibility: hidden;
}

.btn-loading::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ---- Inputs ---- */
.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
    letter-spacing: 0.01em;
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--content-surface);
    border: 1.5px solid var(--content-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.form-input:hover {
    border-color: var(--primary-300);
}

.form-input:focus {
    border-color: var(--primary-500);
    box-shadow: var(--shadow-input-focus);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input-icon {
    position: relative;
}

.form-input-icon .form-input {
    padding-left: 44px;
}

.form-input-icon .input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: var(--font-size-base);
    transition: color var(--transition-fast);
    pointer-events: none;
}

.form-input-icon .form-input:focus ~ .input-icon,
.form-input-icon .form-input:focus + .input-icon {
    color: var(--primary-500);
}

.form-input-icon .input-icon-right {
    left: auto;
    right: 14px;
    pointer-events: all;
    cursor: pointer;
}

.form-input-icon .input-icon-right:hover {
    color: var(--primary-500);
}

.form-input-icon .form-input.has-icon-right {
    padding-right: 44px;
}

/* Input de erro */
.form-input.is-invalid {
    border-color: var(--danger-500);
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

.form-error {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--danger-500);
    margin-top: var(--space-1);
    font-weight: var(--font-weight-medium);
}

/* ---- Cards ---- */
.card {
    background: var(--content-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--content-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-body {
    padding: var(--space-6);
}

.card-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--content-border-light);
}

.card-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--content-border-light);
}

/* ---- Badges ---- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 2px 10px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    letter-spacing: 0.02em;
}

.badge-primary {
    background: var(--primary-100);
    color: var(--primary-700);
}

.badge-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success-600);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-600);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-600);
}

/* ---- Alertas / Toast ---- */
.alert {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    animation: alertSlideIn 0.4s var(--transition-spring);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.08);
    color: var(--danger-600);
    border: 1px solid rgba(239, 68, 68, 0.15);
}

.alert-success {
    background: rgba(34, 197, 94, 0.08);
    color: var(--success-600);
    border: 1px solid rgba(34, 197, 94, 0.15);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.08);
    color: var(--warning-600);
    border: 1px solid rgba(245, 158, 11, 0.15);
}

.alert-info {
    background: rgba(14, 165, 233, 0.08);
    color: var(--info-600);
    border: 1px solid rgba(14, 165, 233, 0.15);
}

.alert i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

@keyframes alertSlideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---- Checkbox custom ---- */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    user-select: none;
}

.form-check input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--content-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
    cursor: pointer;
    flex-shrink: 0;
}

.form-check input[type="checkbox"]:checked {
    background: var(--primary-500);
    border-color: var(--primary-500);
}

.form-check input[type="checkbox"]:checked::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 10px;
    color: white;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.form-check input[type="checkbox"]:hover {
    border-color: var(--primary-400);
}

/* ---- Divider ---- */
.divider {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin: var(--space-6) 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--content-border);
}

/* ---- Avatar ---- */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--content-border);
}

.avatar-sm { width: 32px; height: 32px; }
.avatar-lg { width: 56px; height: 56px; }
.avatar-xl { width: 72px; height: 72px; }