/* 响应式布局 — 电脑 / 平板 / 手机 + PWA 独立窗口 */

:root {
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --touch-min: 44px;
}

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    padding-left: var(--safe-left);
    padding-right: var(--safe-right);
    padding-bottom: var(--safe-bottom);
}

.page-wrap {
    padding-top: var(--safe-top);
}

.header-bar {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: .5rem .75rem;
    margin-bottom: .85rem;
    min-height: var(--touch-min);
}

.nav-toggle {
    display: none;
    width: var(--touch-min);
    height: var(--touch-min);
    border: 1px solid var(--toggle-border);
    border-radius: 10px;
    background: var(--toggle-bg);
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 0;
    flex-shrink: 0;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform .2s, opacity .2s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.header-tools {
    position: static;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.user-bar {
    position: static;
    text-align: right;
    justify-self: end;
}

.pwa-install-btn {
    padding: .38rem .7rem;
    border-radius: 999px;
    border: 1px solid var(--accent);
    background: transparent;
    color: var(--accent);
    font-size: .72rem;
    cursor: pointer;
    white-space: nowrap;
    width: auto;
    flex-shrink: 0;
    min-height: 32px;
}

.pwa-install-btn:hover {
    background: var(--dir-bg);
}

.pwa-ios-hint {
    display: none;
    font-size: .72rem;
    color: var(--text-muted);
    padding: .5rem .75rem;
    margin: 0 0 .75rem;
    border-radius: 10px;
    border: 1px dashed var(--card-border);
    background: var(--card-inner);
    line-height: 1.5;
}

.pwa-ios-hint.show {
    display: block;
}

.nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--modal-mask);
    z-index: 90;
    border: none;
    padding: 0;
    cursor: pointer;
}

.nav-backdrop.show {
    display: block;
}

@media (min-width: 1025px) {
    .site-header {
        padding: 1.5rem 1.5rem 1.25rem;
    }

    .site-nav {
        justify-content: center;
    }

    .main {
        padding: 1.5rem 1.75rem;
    }
}

@media (min-width: 768px) and (max-width: 1024px) {
    .site-header {
        padding: 1.25rem 1rem 1rem;
    }

    .site-title {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .site-nav {
        gap: .4rem;
        justify-content: center;
    }

    .site-nav a {
        padding: .5rem .85rem;
        font-size: .82rem;
    }

    .main {
        padding: 1.25rem 1rem;
    }

    .card {
        padding: 1.25rem;
    }

    .split-grid {
        grid-template-columns: 1fr;
    }

    .trade-split .card {
        min-height: auto;
    }

    .trade-form-line.line-3 {
        grid-template-columns: 1fr 1fr;
    }

    .trade-form-line.line-3 .trade-field:first-child {
        grid-column: 1 / -1;
    }

    .form-compact .line-4,
    .form-compact .line-5 {
        grid-template-columns: repeat(2, 1fr);
    }

    .form-compact .line-plan-2 {
        grid-template-columns: repeat(2, 1fr);
    }

    .pos-metrics {
        grid-template-columns: repeat(2, 1fr);
    }

    .review-detail-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-grid-summary {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
    }
}

@media (max-width: 767px) {
    .nav-toggle {
        display: inline-flex;
    }

    .header-bar {
        grid-template-columns: auto 1fr;
        grid-template-areas:
            "toggle tools"
            "user user";
    }

    .nav-toggle { grid-area: toggle; }
    .header-tools { grid-area: tools; justify-content: flex-end; }
    .user-bar {
        grid-area: user;
        text-align: center;
        width: 100%;
    }

    .site-header {
        padding: .85rem .75rem .75rem;
        text-align: left;
    }

    .site-title {
        font-size: 1.15rem;
        margin-bottom: .65rem;
        text-align: center;
    }

    .site-title-sub {
        font-size: .58rem;
        letter-spacing: .14em;
    }

    .site-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: min(86vw, 320px);
        height: 100dvh;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: .35rem;
        padding: calc(var(--safe-top) + 3.5rem) 1rem 1.5rem;
        background: var(--card-bg);
        border-right: 1px solid var(--card-border);
        box-shadow: var(--shadow-card-hover);
        z-index: 100;
        transform: translateX(-105%);
        transition: transform .28s ease;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .site-nav.open {
        transform: translateX(0);
    }

    .site-nav a {
        width: 100%;
        text-align: left;
        padding: .75rem 1rem;
        font-size: .9rem;
        min-height: var(--touch-min);
        display: flex;
        align-items: center;
        border-radius: 10px;
    }

    .main {
        padding: .85rem .75rem 1.25rem;
    }

    .card {
        padding: 1rem;
        border-radius: 12px;
        margin-bottom: 1rem;
    }

    .card h2 {
        font-size: 1rem;
    }

    .form-compact .line-2,
    .form-compact .line-3,
    .form-compact .line-4,
    .form-compact .line-5,
    .form-compact .line-plan-1,
    .form-compact .line-plan-2 {
        grid-template-columns: 1fr;
    }

    .form-compact-review .tag-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .form-compact-review .kline-row {
        grid-template-columns: 1fr 1fr;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .split-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .split-grid .card {
        min-height: auto;
    }

    .trade-split .card {
        min-height: auto;
    }

    .trade-top-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .trade-top-bar-actions {
        width: 100%;
    }

    .trade-top-bar-actions .btn-ctp-sm {
        width: 100%;
        min-height: var(--touch-min);
    }

    .pos-metrics {
        grid-template-columns: repeat(2, 1fr);
    }

    .review-detail-grid {
        grid-template-columns: 1fr;
    }

    .review-detail-item.wide {
        grid-column: span 1;
    }

    .stat-grid,
    .stat-grid:not(.stat-grid-summary) {
        grid-template-columns: repeat(2, 1fr);
        gap: .65rem;
    }

    .stat-grid-summary {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
    }

    .stat-grid-summary .stat-item {
        flex: 0 0 auto;
        min-width: 4.25rem;
        padding: .35rem .15rem;
    }

    .stat-grid-summary .stat-item .label {
        font-size: .58rem;
    }

    .stat-grid-summary .stat-item .value {
        font-size: .72rem;
    }

    .stat-item {
        padding: .75rem .5rem;
    }

    .stat-grid-summary .stat-item {
        padding: .35rem .15rem;
    }

    .stat-item .value {
        font-size: 1.1rem;
    }

    .filter-row .field {
        width: 100%;
        min-width: 0;
    }

    .trade-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .profile-row {
        grid-template-columns: 1fr;
        gap: .25rem;
    }

    .modal-box {
        padding: 1rem;
        border-radius: 12px;
        max-height: calc(100dvh - 1rem);
    }

    .modal-box.review-modal-fullscreen {
        width: 100%;
        height: 100dvh;
        border-radius: 0;
    }

    th, td {
        padding: .55rem .45rem;
        font-size: .8rem;
    }

    .card-scroll {
        max-height: none;
    }

    .stats-card-head {
        flex-direction: column;
        align-items: stretch;
    }

    .stats-view-field {
        width: 100%;
    }

    input, select, textarea, button {
        font-size: 16px;
    }

    .form-compact input,
    .form-compact select {
        font-size: 16px;
    }
}

@media (max-width: 479px) {
    .stat-grid:not(.stat-grid-summary) {
        grid-template-columns: 1fr 1fr;
    }

    .stat-grid-summary .stat-item {
        min-width: 3.75rem;
    }

    .theme-switch-btn {
        padding: .35rem .55rem;
        font-size: .7rem;
    }

    .pos-metrics {
        grid-template-columns: 1fr;
    }
}

@media (display-mode: standalone) {
    .site-header {
        padding-top: max(.75rem, var(--safe-top));
    }

    .pwa-install-btn,
    .pwa-ios-hint {
        display: none !important;
    }
}

@media (max-width: 767px) and (orientation: landscape) {
    .site-nav {
        width: min(50vw, 280px);
        padding-top: calc(var(--safe-top) + 2.5rem);
    }
}

@media (hover: none) and (pointer: coarse) {
    .site-nav a,
    .btn-del,
    .trade-actions a,
    .trade-actions button,
    .preset-tabs a {
        min-height: var(--touch-min);
    }

    .card:hover {
        transform: none;
    }

    .list-item:hover {
        box-shadow: none;
    }

    .stat-item:hover {
        transform: none;
    }
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-responsive table {
    min-width: 560px;
}

body.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 1rem;
    padding-top: max(1rem, var(--safe-top));
    padding-bottom: max(1rem, var(--safe-bottom));
}

@media (max-width: 767px) {
    body.login-page {
        align-items: flex-start;
        padding: .75rem;
        padding-top: max(.75rem, var(--safe-top));
    }

    body.login-page .login-wrap {
        max-width: 100%;
    }

    body.login-page .login-box {
        padding: 1.75rem 1.25rem 1.5rem;
    }
}