/**
 * FORMZILLA 🦖 - Form States CSS
 * 
 * Управление визуальными состояниями формы:
 * - Скрытие/показ формы
 * - Спиннер загрузки
 * - Сообщения об ошибках
 * - Сообщения об успехе
 * 
 * Все блоки состояний занимают полную высоту viewport с учетом отступов
 */

/* ========================================
   Базовые контейнеры состояний
   ======================================== */

.form-wrapper {
    position: relative;
    min-height: 100vh;
}

.form-state-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    flex-direction: column;
}

/* ========================================
   Утилиты видимости
   ======================================== */

.form-state-hidden {
    display: none !important;
}

.form-state-visible {
    display: flex;
}

/* ========================================
   Контейнер формы
   ======================================== */

.form-container {
    width: 100%;
    transition: opacity 0.3s ease;
}

.form-container.form-state-hidden {
    opacity: 0;
    pointer-events: none;
}

/* ========================================
   Состояние: Спиннер загрузки
   ======================================== */

.spinner-state {
    text-align: center;
}

.spinner-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.spinner-content .spinner-border {
    width: 4rem;
    height: 4rem;
    border-width: 0.3rem;
    margin-bottom: 1.5rem;
}

.spinner-content p {
    font-size: 1.125rem;
    color: #6c757d;
    margin: 0;
}

/* ========================================
   Состояние: Ошибка
   ======================================== */

.error-state {
    text-align: center;
}

.error-content {
    max-width: 600px;
    padding: 2rem;
}

.error-icon {
    font-size: 4rem;
    color: #dc3545;
    margin-bottom: 1rem;
}

.error-icon i {
    font-size: 4rem;
}

.error-content h4 {
    font-size: 1.75rem;
    font-weight: 600;
    color: #212529;
    margin-bottom: 1rem;
}

.error-message {
    font-size: 1.125rem;
    color: #6c757d;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.retry-button {
    min-width: 200px;
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

.retry-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

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

/* ========================================
   Состояние: Успех
   ======================================== */

.success-state {
    text-align: center;
}

.success-content {
    max-width: 600px;
    padding: 2rem;
}

.success-icon {
    font-size: 4rem;
    color: #198754;
    margin-bottom: 1rem;
}

.success-icon i {
    font-size: 4rem;
}

.success-content h4 {
    font-size: 1.75rem;
    font-weight: 600;
    color: #212529;
    margin-bottom: 1rem;
}

.success-message {
    font-size: 1.125rem;
    color: #6c757d;
    line-height: 1.6;
}

/* ========================================
   Адаптивность
   ======================================== */

@media (max-width: 768px) {
    .form-state-container {
        padding: 1.5rem;
    }

    .error-content,
    .success-content {
        padding: 1.5rem;
    }

    .error-icon,
    .success-icon {
        font-size: 3rem;
    }

    .error-icon i,
    .success-icon i {
        font-size: 3rem;
    }

    .error-content h4,
    .success-content h4 {
        font-size: 1.5rem;
    }

    .error-message,
    .success-message {
        font-size: 1rem;
    }

    .spinner-content .spinner-border {
        width: 3rem;
        height: 3rem;
        border-width: 0.25rem;
    }

    .spinner-content p {
        font-size: 1rem;
    }

    .retry-button {
        min-width: 100%;
        padding: 0.625rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .form-state-container {
        padding: 1rem;
    }

    .error-content,
    .success-content {
        padding: 1rem;
    }
}

/* ========================================
   Анимации
   ======================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-state-visible {
    animation: fadeIn 0.3s ease;
}

/* Анимация пульсации для спиннера */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

.spinner-content p {
    animation: pulse 1.5s ease-in-out infinite;
}

/* ========================================
   Accessibility (a11y)
   ======================================== */

.error-content:focus,
.success-content:focus {
    outline: 2px solid #0d6efd;
    outline-offset: 4px;
}

/* Улучшенная видимость для пользователей с ослабленным зрением */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Высокий контраст для пользователей с ослабленным зрением */
@media (prefers-contrast: high) {
    .error-icon {
        color: #b02a37;
    }

    .success-icon {
        color: #146c43;
    }

    .error-message,
    .success-message {
        color: #495057;
    }
}