/**
 * SCREENS.CSS - Стили экранов
 */

/* ============================================
   MAIN CONTAINER
   ============================================ */

.main {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-bottom: calc(var(--tabbar-height) + var(--safe-area-bottom) + 16px);
    -webkit-overflow-scrolling: touch;
}

/* ============================================
   SCREENS
   ============================================ */

.screen {
    display: none;
    padding: 20px 16px;
    min-height: 100%;
    animation: fadeIn 0.3s ease;
}

.screen.active {
    display: block;
}

.screen-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: 20px;
}

/* ============================================
   HOME SCREEN
   ============================================ */

.home-hero {
    text-align: center;
    padding: 40px 20px;
    margin-bottom: 24px;
}

.home-hero h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: 8px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.home-hero p {
    color: var(--text-secondary);
    font-size: var(--font-size-md);
}

.home-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.home-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 24px;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
    transition: var(--transition-fast);
}

.home-action-btn.primary {
    background: var(--accent-gradient);
    color: #000;
    box-shadow: var(--shadow-glow);
}

.home-action-btn.secondary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

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

.home-action-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.home-action-row .home-action-btn {
    font-size: var(--font-size-md);
    padding: 16px;
}

.action-icon {
    font-size: 24px;
}

.rates-preview {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--border-color);
}

.rates-preview h3 {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.rates-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.rate-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.rate-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.rate-value {
    font-weight: 600;
    color: var(--accent-primary);
}

/* ============================================
   EXCHANGE SCREEN
   ============================================ */

.exchange-step {
    display: none;
}

.exchange-step.active {
    display: block;
    animation: slideUp 0.3s ease;
}

.step-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: 24px;
    text-align: center;
}

/* Deal Type Grid */
.deal-type-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.deal-type-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 24px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition-fast);
}

.deal-type-item:active {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    transform: scale(0.98);
}

.deal-type-icon {
    font-size: 36px;
}

.deal-type-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-align: center;
}

/* Exchange Form */
.exchange-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.exchange-field {
    position: relative;
}

.exchange-field label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.swap-btn {
    width: 44px;
    height: 44px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--accent-primary);
    transition: var(--transition-fast);
}

.swap-btn:active {
    background: var(--bg-tertiary);
    transform: rotate(180deg);
}

.swap-btn svg {
    width: 20px;
    height: 20px;
}

.exchange-rate {
    text-align: center;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.exchange-rate small {
    display: block;
    margin-top: 4px;
    opacity: 0.7;
}

/* Requisites */
.requisites-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.server-requisites {
    margin-bottom: 8px;
}

.requisites-card {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 16px;
    border: 1px solid var(--border-color);
}

.requisites-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.requisites-value {
    font-size: var(--font-size-lg);
    font-weight: 600;
    word-break: break-all;
    margin-bottom: 12px;
}

/* Payment Step */
.timer-block {
    text-align: center;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.timer-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.timer-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--accent-primary);
}

.timer-value.timer-warning {
    color: var(--error);
    animation: pulse 1s ease infinite;
}

.order-info {
    margin-bottom: 24px;
}

.order-summary {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--border-color);
}

.order-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.order-row:last-child {
    border-bottom: none;
}

.order-requisites {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.upload-section {
    text-align: center;
    padding: 24px;
    background: var(--bg-card);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
}

.upload-section p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

/* Status Step */
.status-block {
    text-align: center;
    padding: 40px 20px;
}

.status-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.status-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: 12px;
}

.status-details {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* ============================================
   HISTORY SCREEN
   ============================================ */

.history-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.history-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-input);
    border-radius: var(--radius-md);
    font-size: 20px;
}

.history-info {
    flex: 1;
    min-width: 0;
}

.history-title {
    display: block;
    font-weight: 600;
    font-size: var(--font-size-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-date {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.history-status {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-align: right;
}

/* ============================================
   PROFILE SCREEN
   ============================================ */

.profile-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
}

.profile-avatar {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
}

.profile-avatar svg {
    width: 36px;
    height: 36px;
    fill: #000;
}

.profile-info {
    flex: 1;
}

.profile-name {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.profile-id {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.profile-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

.profile-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.profile-menu-item:active {
    background: var(--bg-tertiary);
}

.profile-menu-item span:first-child {
    font-size: 20px;
}

.profile-menu-item span:nth-child(2) {
    flex: 1;
    font-weight: 500;
}

.profile-menu-item .chevron {
    width: 16px;
    height: 16px;
    opacity: 0.5;
}

.theme-switch {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.app-version {
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* ============================================
   CRYPTO TYPE MODAL
   ============================================ */

.crypto-type-modal {
    text-align: center;
    padding: 20px 0;
}

.crypto-type-modal h3 {
    margin-bottom: 24px;
}

.crypto-type-buttons {
    display: flex;
    gap: 12px;
}

.crypto-type-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 16px;
    background: var(--bg-input);
    border-radius: var(--radius-lg);
    transition: var(--transition-fast);
}

.crypto-type-btn:active {
    background: var(--bg-tertiary);
    transform: scale(0.98);
}

.crypto-type-icon {
    font-size: 36px;
}

/* ============================================
   FAQ
   ============================================ */

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-item h4 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: 8px;
}

.faq-item p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}