/* Deerbee Inbox — phone-first styles. Plain CSS with custom properties, no framework (arch §1, §11). */

:root {
    --color-bg: #fbfaf7;
    --color-surface: #ffffff;
    --color-text: #1f1d1a;
    --color-muted: #6f6a62;
    --color-border: #e4e0d8;
    --color-accent: #b5651d;
    --color-accent-text: #ffffff;
    --color-danger: #c0392b;
    --color-success: #2e7d32;
    --color-warning: #9a5b00;
    --color-highlight: #fbf1e6;

    --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-size-base: 1.0625rem; /* 17px: the iOS body size; also prevents zoom-on-focus in inputs */
    --line-height: 1.45;
    --font-size-h2: 1.375rem; /* 22px ≈ 1.3 × body */
    --font-size-h1: 1.75rem;  /* 28px ≈ 1.27 × h2 */
    --font-size-small: 0.875rem;

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;

    --radius: 0.75rem;
    --tap-target: 2.75rem; /* 44px minimum touch target */

    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #151412;
        --color-surface: #1f1d1a;
        --color-text: #f1eee8;
        --color-muted: #a39d93;
        --color-border: #34312c;
        --color-accent: #e08a3c;
        --color-accent-text: #151412;
        --color-danger: #ef6b5e;
        --color-success: #6abf69;
        --color-warning: #e5a64b;
        --color-highlight: #2a221a;
    }
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    background: var(--color-bg); /* also behind the status bar and the overscroll bounce */
    touch-action: manipulation; /* no double-tap zoom on buttons */
}

body {
    margin: 0;
    min-height: 100dvh;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    padding: var(--safe-top) var(--safe-right) var(--safe-bottom) var(--safe-left);
}

/* Type scale (P1-06): body 17px; each heading step at least 1.25x the one below it. */
h1 {
    font-size: var(--font-size-h1);
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin: 0 0 var(--space-3);
}

.page {
    max-width: 40rem;
    margin: 0 auto;
    padding: var(--space-4);
}

.muted {
    color: var(--color-muted);
}

.placeholder {
    padding-top: var(--space-6);
}

[hidden] {
    display: none !important;
}

h2 {
    font-size: var(--font-size-h2);
    line-height: 1.25;
    margin: 0 0 var(--space-3);
}

a {
    color: var(--color-accent);
}

.small {
    font-size: var(--font-size-small);
}

.section {
    margin-top: var(--space-6);
}

.stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.stack button {
    margin-top: var(--space-2);
}

/* Forms */

label {
    font-weight: 600;
}

input[type="text"],
input[type="password"],
input[type="number"],
select,
textarea {
    width: 100%;
    min-height: var(--tap-target);
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: calc(var(--radius) / 1.5);
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
}

textarea {
    resize: vertical;
}

label.checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-height: var(--tap-target);
    font-weight: 400;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.button {
    min-height: var(--tap-target);
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.button:disabled {
    opacity: 0.6;
    cursor: progress;
}

.button-primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-accent-text);
}

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

.button-block {
    width: 100%;
}

.button-small {
    min-height: 2rem;
    padding: var(--space-1) var(--space-3);
    font-size: 0.875rem;
}

.badge {
    display: inline-block;
    padding: 0 var(--space-2);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-size: 0.75rem;
    color: var(--color-muted);
}

/* Messages */

.notice {
    margin: 0 0 var(--space-4);
    padding: var(--space-3);
    border-radius: calc(var(--radius) / 1.5);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
}

.notice-error {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.notice-warning {
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.notice-success {
    border-color: var(--color-success);
    color: var(--color-success);
}

.notice p {
    margin: 0;
}

.notice p + p {
    margin-top: var(--space-2);
}

/* Label/value facts (Settings → Instagram) */

.facts {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: var(--space-2) var(--space-4);
    margin: 0 0 var(--space-4);
}

.facts dt {
    color: var(--color-muted);
}

.facts dd {
    margin: 0;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow-wrap: anywhere;
}

/* Lists of items (passkeys, settings sections) */

.item-list {
    list-style: none;
    margin: 0 0 var(--space-4);
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
}

.item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    min-height: var(--tap-target);
}

.item + .item {
    border-top: 1px solid var(--color-border);
}

.item-text {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.nav-list a {
    flex: 1;
    color: inherit;
    text-decoration: none;
}

/* Login */

.login {
    padding-top: calc(var(--space-6) * 2);
    max-width: 24rem;
}

.login h1 {
    margin-bottom: var(--space-6);
}

.login #passkey-sign-in {
    margin-bottom: var(--space-6);
}

/* Fake Instagram controls (/dev/fake, development only) */

.fake-media {
    margin-bottom: var(--space-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
}

.fake-media summary {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    min-height: var(--tap-target);
    cursor: pointer;
}

.fake-media summary img {
    flex: none;
    object-fit: cover;
    border-radius: calc(var(--radius) / 2);
}

.fake-thread {
    list-style: none;
    margin: 0;
    padding: var(--space-2) var(--space-3);
    border-top: 1px solid var(--color-border);
}

.fake-thread li {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-1) 0 var(--space-2);
}

.fake-thread .fake-reply {
    padding-left: var(--space-6);
}

.fake-comment {
    min-width: 0;
    overflow-wrap: break-word;
}

.fake-actions {
    display: flex;
    gap: var(--space-2);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* Reply queue / workspace (arch §11): one thread per screen, actions in a sticky bottom bar. */

/* The queue fills the screen below the safe area and the reconnect banner (if shown), so the reply field and the
   action bar start at the bottom of the screen. */
body:has(.queue-page) {
    display: flex;
    flex-direction: column;
    overscroll-behavior-y: contain; /* our pull to refresh replaces the browser's own */
    padding-bottom: 0; /* the action bar pads itself for the home indicator */
}

.queue-page {
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 40rem;
    margin: 0 auto;
}

.workspace {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 var(--space-4);
}

.pull-indicator {
    position: absolute;
    top: calc(-1 * var(--space-6));
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
}

.pull-indicator.pull-visible {
    opacity: 1;
}

.pull-label {
    padding: var(--space-1) var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: var(--color-surface);
    color: var(--color-muted);
    font-size: var(--font-size-small);
}

.pull-ready .pull-label {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.status-bar {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: var(--tap-target);
    padding: var(--space-2) 0;
    font-size: var(--font-size-small);
}

.status-home {
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.status-line {
    flex: 1;
    min-width: 0;
    margin: 0;
    color: var(--color-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.status-failed {
    color: var(--color-danger);
    font-weight: 600;
}

.refresh-button {
    min-width: var(--tap-target);
    min-height: var(--tap-target);
}

.refresh-button[aria-busy="true"] {
    opacity: 0.6;
}

.status-settings {
    display: inline-flex;
    align-items: center;
    min-height: var(--tap-target);
    color: var(--color-muted);
}

.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-bottom: 20vh;
    text-align: center;
}

.post {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) 0 var(--space-3);
    border-bottom: 1px solid var(--color-border);
}

.post-thumb {
    flex: none;
    display: block;
    width: 3.5rem;
    height: 3.5rem;
}

.post-thumb img,
img.post-thumb {
    width: 3.5rem;
    height: 3.5rem;
    object-fit: cover;
    border-radius: calc(var(--radius) / 1.5);
    background: var(--color-border);
}

.post-text {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
    font-size: var(--font-size-small);
}

.post-kind {
    font-weight: 600;
}

.post-caption {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--color-muted);
}

.thread {
    list-style: none;
    margin: 0;
    padding: var(--space-3) 0;
}

.message {
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius);
}

.message + .message {
    margin-top: var(--space-2);
}

.message-reply {
    margin-left: var(--space-6);
}

.message-earlier {
    color: var(--color-muted);
}

.message-target {
    background: var(--color-highlight);
    border-left: 3px solid var(--color-accent);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.message-owner .message-user {
    color: var(--color-accent);
}

.sent-label {
    margin-left: auto;
    color: var(--color-accent);
    font-weight: 600;
}

.message-just-sent {
    animation: sent-highlight 2s ease-out;
}

@keyframes sent-highlight {
    from { background-color: var(--color-highlight); }
    to { background-color: transparent; }
}

@media (prefers-reduced-motion: reduce) {
    .message-just-sent {
        animation: none;
    }
}

.message-meta {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    font-size: var(--font-size-small);
}

.message-text {
    margin: var(--space-1) 0 0;
    overflow-wrap: break-word;
    white-space: pre-wrap;
}

.reply {
    margin-top: auto;
    padding-top: var(--space-3);
}

.reply textarea {
    min-height: 6.5rem;
}

/* A reply that did not go through (arch §7): sits right above the field, Retry replaces Send. */
.send-error {
    margin-top: auto;
    padding: var(--space-3);
    border: 1px solid var(--color-danger);
    border-radius: calc(var(--radius) / 1.5);
    background: var(--color-surface);
    color: var(--color-danger);
}

.send-error-unknown {
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.send-error p {
    margin: var(--space-1) 0 0;
    color: var(--color-text);
}

.send-error + .reply {
    margin-top: 0;
}

.action-bar {
    position: sticky;
    bottom: 0;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr 1.6fr;
    gap: var(--space-2);
    margin: 0 calc(-1 * var(--space-4));
    padding: var(--space-3) var(--space-4) calc(var(--space-3) + var(--safe-bottom));
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.action-bar form {
    margin: 0;
}

.action-bar .button {
    min-height: 3rem;
}

.send-button {
    grid-column: 3;
}

.action-bar-answered {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: auto;
}

.action-bar-answered .next-button:only-child {
    grid-column: 1 / -1;
}

a.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

/* On-screen keyboard (viewport.js, iOS): the bar is pinned right above the keyboard instead of sticking to the
   bottom of the page, which the keyboard covers. The workspace gets room for the keyboard and the bar below the
   reply field, so viewport.js can always scroll the field into the visible part above the bar. */

.keyboard-open .action-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: var(--keyboard-inset, 0px);
    max-width: 40rem;
    margin: 0 auto;
    padding: var(--space-2) calc(var(--space-4) + var(--safe-right)) var(--space-2) calc(var(--space-4) + var(--safe-left));
}

.keyboard-open .workspace {
    padding-bottom: calc(var(--keyboard-height, 0px) + var(--action-bar-height, 4rem) + var(--space-2));
}

/* "Reconnect Instagram" banner (web/ReconnectBanner), above every page */

.banner {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--space-1) var(--space-2);
    margin: var(--space-2) max(var(--space-4), calc((100% - 40rem) / 2)) 0;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-danger);
    border-radius: calc(var(--radius) / 1.5);
    background: var(--color-surface);
    color: var(--color-danger);
    font-size: var(--font-size-small);
}

.banner a {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    min-height: var(--tap-target);
    font-weight: 600;
}

/* Offline page (static/offline.html, shown by the service worker) */

.offline {
    padding-top: calc(var(--space-6) * 3);
    text-align: center;
}

.offline-icon {
    border-radius: var(--radius);
}