/* ===== CARD COMPONENTS ===== */
.card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    width: 100%;
}

.card__header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-variant));
    color: white;
    padding: var(--spacing-lg);
    text-align: center;
}

.card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin: 0;
}

.card__body {
    padding: var(--spacing-xl);
}

/* ===== FORM COMPONENTS ===== */
.form {
    width: 100%;
}

.form__group {
    margin-bottom: var(--spacing-lg);
}

.form__label {
    display: block;
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.form__label--required::after {
    content: " *";
    color: var(--danger-color);
}

.form__control {
    width: 100%;
    padding: 1rem var(--spacing-md);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
}

.form__control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(100, 127, 188, 0.15);
    transform: translateY(-1px);
}

.form__control::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.form__control--error {
    border-color: var(--danger-color);
    animation: shake 0.3s ease-in-out;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-4px);
    }

    75% {
        transform: translateX(4px);
    }
}

.form__control--error:focus {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.15);
}

.form__check {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
}

.form__check-input {
    width: 1.25rem;
    height: 1.25rem;
    margin-top: 0.125rem;
    background-color: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.form__check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form__check-input:focus {
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(100, 127, 188, 0.15);
}

.form__check-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1.4;
}

.form__error {
    color: var(--danger-color);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
    display: none;
}

.form__error--show {
    display: block;
}

/* ===== BUTTON COMPONENTS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-medium);
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    border: 2px solid transparent;
    padding: 1rem var(--spacing-lg);
    font-size: var(--font-size-base);
    line-height: 1.5;
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: all var(--transition-fast);
    width: 100%;
    background: none;
    position: relative;
    overflow: hidden;
    min-height: 3rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn:not(:disabled):hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn:not(:disabled):active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.btn--primary {
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-variant));
    border-color: var(--primary-color);
}

.btn--primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn--secondary {
    color: var(--text-primary);
    background-color: transparent;
    border-color: var(--border-color);
}

.btn--secondary:hover:not(:disabled) {
    background-color: var(--bg-secondary);
    border-color: var(--primary-color);
}

/* ===== ALERT COMPONENTS ===== */
.alert-container {
    position: fixed;
    top: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    width: 90%;
    max-width: 400px;
    pointer-events: none;
}

.alert {
    position: fixed;
    top: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    width: 90%;
    max-width: 400px;
    margin-bottom: var(--spacing-md);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    pointer-events: auto;
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
    transition: all 0.3s ease-out;
}

.alert--visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.alert--removing {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
}

.alert__content {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
}

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

.alert__message {
    flex: 1;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.alert__close {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

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

.alert__close i {
    font-size: var(--font-size-sm);
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.alert--success {
    border-color: var(--success-color, #28a745);
}

.alert--success .alert__icon {
    color: var(--success-color, #28a745);
}

.alert--error,
.alert--danger {
    border-color: var(--error-color, #dc3545);
}

.alert--error .alert__icon,
.alert--danger .alert__icon {
    color: var(--error-color, #dc3545);
}

.alert--warning {
    border-color: var(--warning-color, #ffc107);
}

.alert--warning .alert__icon {
    color: var(--warning-color, #ffc107);
}

.alert--info {
    border-color: var(--info-color, #17a2b8);
}

.alert--info .alert__icon {
    color: var(--info-color, #17a2b8);
}

/* ===== LOADING SPINNER ===== */
.loading__spinner {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: inline-block;
}

.loading__spinner--small {
    width: 1rem;
    height: 1rem;
    border-width: 1.5px;
}

.btn__loading {
    display: none;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.btn__text {
    display: inline;
}

.spinner {
    width: 1rem;
    height: 1rem;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: var(--spacing-xs);
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}