/* app.css — self-contained stylesheet for the receipt scanner.
   Carries the BCS iOS lessons: 100dvh, safe-area insets, 16px base font
   (suppresses iOS input zoom), tap-highlight off, dark mode. */

:root {
    --navy: #042847;
    --navy-soft: #0b3a63;
    --accent: #0ea5a3;
    --bg: #f4f6f8;
    --surface: #ffffff;
    --text: #16232f;
    --text-dim: #5b6b7a;
    --border: #dde3e9;
    --green: #1a7f37;
    --red: #c62828;
    --red-soft: #fdecea;
    --radius: 14px;
    --shadow: 0 1px 3px rgba(4, 40, 71, 0.10);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0d161f;
        --surface: #16222e;
        --text: #e8eef3;
        --text-dim: #93a4b3;
        --border: #26364534;
        --navy-soft: #0e4475;
        --green: #4cc38a;
        --red: #ef6a5a;
        --red-soft: #3a1f1c;
        --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
    }
}

* { box-sizing: border-box; }

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

body {
    margin: 0;
    font: 16px/1.5 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    -webkit-tap-highlight-color: transparent;
}

.app {
    min-height: 100vh;
    min-height: 100dvh; /* iOS URL-bar-safe viewport */
    display: flex;
    flex-direction: column;
}

.center {
    flex: 1;
    min-height: 100dvh;
    display: grid;
    place-items: center;
}

/* --- top bar --- */
.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: calc(0.6rem + env(safe-area-inset-top)) calc(1rem + env(safe-area-inset-right)) 0.6rem calc(1rem + env(safe-area-inset-left));
    background: var(--navy);
    color: #fff;
}

.topbar-title { font-weight: 700; font-size: 1.05rem; }

.topbar-user {
    flex: 1;
    text-align: right;
    font-size: 0.8rem;
    opacity: 0.75;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* --- scan screen --- */
.scan {
    flex: 1;
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: 1rem calc(1rem + env(safe-area-inset-right)) calc(2rem + env(safe-area-inset-bottom)) calc(1rem + env(safe-area-inset-left));
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.snap-btn {
    width: 100%;
    padding: 1.6rem 1rem;
    font-size: 1.35rem;
    font-weight: 700;
    color: #fff;
    background: var(--navy);
    border: none;
    border-radius: 20px;
    box-shadow: var(--shadow);
    cursor: pointer;
}

.snap-btn:active { background: var(--navy-soft); transform: scale(0.99); }
.snap-btn:disabled { opacity: 0.65; }

/* --- draft (receipt in progress) --- */
.draft-card {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
    border-color: var(--accent);
}

.draft-thumbs {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding-bottom: 0.2rem;
}

.draft-thumbs .thumb {
    width: 72px;
    height: 94px;
}

.draft-meta {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-dim);
}

.draft-actions {
    display: flex;
    gap: 0.7rem;
}

.btn--add {
    flex: 1;
    padding: 1rem 0.6rem;
    font-size: 1rem;
    border-radius: 20px;
    color: var(--accent);
    border: 2px solid var(--accent);
    background: transparent;
    white-space: nowrap;
}

.btn--add:disabled { opacity: 0.4; }

.snap-btn--send {
    flex: 1.6;
    padding: 1rem 0.6rem;
    font-size: 1.15rem;
    background: var(--accent);
}

.snap-btn--send:active { background: #0b8a88; }

.counters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-size: 0.9rem;
    color: var(--text-dim);
}

.counter {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.2rem 0.7rem;
}

.counter--sent { color: var(--green); }
.counter--failed { color: var(--red); font-weight: 600; }

.hint {
    color: var(--text-dim);
    font-size: 0.95rem;
    text-align: center;
    margin: 0.5rem 0;
}

/* --- cards --- */
.card {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 0.7rem;
}

.thumb {
    width: 56px;
    height: 72px;
    object-fit: cover;
    border-radius: 8px;
    background: var(--bg);
    flex-shrink: 0;
}

.thumb--small { width: 40px; height: 52px; }

.last-card-body { flex: 1; min-width: 0; }
.last-card-title { font-weight: 600; font-size: 0.95rem; }

.pages-badge {
    font-size: 0.72rem;
    font-weight: 700;
    color: #fff;
    background: var(--accent);
    border-radius: 999px;
    padding: 0.1rem 0.5rem;
    margin-left: 0.4rem;
    vertical-align: 1px;
}

.last-card-status { font-size: 0.85rem; color: var(--text-dim); }
.last-card-status--sent { color: var(--green); }
.last-card-status--failed { color: var(--red); }

/* --- failed section --- */
.failed-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--red);
    margin-bottom: 0.4rem;
}

.failed { display: flex; flex-direction: column; gap: 0.5rem; }

.failed-row { background: var(--red-soft); border-color: transparent; }

.failed-error {
    flex: 1;
    min-width: 0;
    font-size: 0.82rem;
    color: var(--text);
    overflow-wrap: anywhere;
}

/* --- buttons --- */
.btn {
    font: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.45rem 0.9rem;
    cursor: pointer;
}

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

.btn--primary {
    color: #fff;
    background: var(--navy);
    border-color: var(--navy);
}

.btn--small { font-size: 0.8rem; padding: 0.3rem 0.7rem; }

.btn--ghost {
    background: transparent;
    border-color: transparent;
    color: inherit;
    opacity: 0.85;
}

.btn--chip {
    color: var(--accent);
    border-color: var(--accent);
    background: transparent;
    border-radius: 999px;
    white-space: nowrap;
}

.btn--link {
    background: none;
    border: none;
    color: var(--text-dim);
    text-decoration: underline;
    font-weight: 500;
    margin-top: 0.5rem;
}

.btn--wide { width: 100%; padding: 0.9rem; font-size: 1.05rem; }

/* --- login --- */
.login {
    flex: 1;
    min-height: 100dvh;
    max-width: 340px;
    margin: 0 auto;
    padding: 2rem 1.5rem calc(2rem + env(safe-area-inset-bottom));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 0.8rem;
}

.login-logo { border-radius: 22%; box-shadow: var(--shadow); }
.login h1 { margin: 0; font-size: 1.6rem; color: var(--text); }
.login-tagline { margin: 0 0 1rem; color: var(--text-dim); }
.login-error { color: var(--red); font-size: 0.9rem; }

/* --- toasts --- */
.toasts {
    position: fixed;
    bottom: calc(1rem + env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 100;
    width: min(92vw, 420px);
}

.toast {
    background: var(--navy);
    color: #fff;
    padding: 0.7rem 1rem;
    border-radius: 12px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
    font-size: 0.9rem;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.25s, transform 0.25s;
}

.toast--visible { opacity: 1; transform: none; }
.toast--error { background: var(--red); }
.toast--success { background: var(--green); }

/* --- spinner --- */
.spinner {
    width: 34px;
    height: 34px;
    border: 3px solid var(--border);
    border-top-color: var(--navy);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@media (prefers-color-scheme: dark) {
    .spinner { border-top-color: var(--accent); }
}

@keyframes spin { to { transform: rotate(360deg); } }