/**
 * AION Tasks — основные стили
 */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    background-color: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    padding-top: var(--safe-area-top);
    padding-bottom: calc(var(--safe-area-bottom) + 60px); /* Для MainButton */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

/* === Header === */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--tg-theme-bg-color);
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--tg-theme-secondary-bg-color);
}

.header__title {
    font-size: 24px;
    font-weight: 700;
}

.header__stats {
    font-size: 14px;
    color: var(--tg-theme-hint-color);
}

/* === Filters === */
.filters {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.filters::-webkit-scrollbar {
    display: none;
}

.filter {
    flex-shrink: 0;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-full);
    background: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter:active {
    transform: scale(0.95);
}

.filter.active {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
}

/* === Task List === */
.task-list {
    flex: 1;
    padding: var(--spacing-md);
}

/* === Empty State === */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
}

.empty-state__icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.empty-state__text {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.empty-state__hint {
    font-size: 14px;
    color: var(--tg-theme-hint-color);
}

/* === Modal === */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: flex-end;
}

.modal.hidden {
    display: none;
}

.modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.modal__content {
    position: relative;
    width: 100%;
    max-height: 90vh;
    background: var(--tg-theme-bg-color);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: var(--spacing-md);
    padding-bottom: calc(var(--spacing-md) + var(--safe-area-bottom));
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.modal__title {
    font-size: 20px;
    font-weight: 600;
}

.modal__close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--tg-theme-secondary-bg-color);
    border-radius: var(--radius-full);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--tg-theme-hint-color);
}

/* === Form === */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-row {
    display: flex;
    gap: var(--spacing-md);
}

.form-group.half {
    flex: 1;
}

.label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--tg-theme-hint-color);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--tg-theme-secondary-bg-color);
    border-radius: var(--radius-md);
    background: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
    font-size: 16px;
    transition: border-color var(--transition-fast);
}

.input:focus {
    outline: none;
    border-color: var(--tg-theme-button-color);
}

.input::placeholder {
    color: var(--tg-theme-hint-color);
}

.textarea {
    resize: vertical;
    min-height: 60px;
}

/* Priority buttons */
.priority-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.priority-btn {
    width: 44px;
    height: 44px;
    border: 2px solid var(--tg-theme-secondary-bg-color);
    border-radius: var(--radius-md);
    background: var(--tg-theme-bg-color);
    font-size: 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.priority-btn:active {
    transform: scale(0.9);
}

.priority-btn.active {
    border-color: var(--tg-theme-button-color);
    background: var(--tg-theme-secondary-bg-color);
}

/* === Utilities === */
.hidden {
    display: none !important;
}

.text-hint {
    color: var(--tg-theme-hint-color);
}

.text-danger {
    color: var(--color-danger);
}

.text-success {
    color: var(--color-success);
}