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

:root {
    --color-bg: #f0f2f5;
    --color-card: #ffffff;
    --color-border: #e8eaed;
    --color-primary: #111318;
    --color-accent: #1a6bff;
    --color-accent-light: #eaf0ff;
    --color-accent-dark: #0050cc;
    --color-danger: #c62828;
    --color-warn: #d84315;
    --color-warn-light: #fbe9e7;
    --color-success: #2e7d32;
    --color-muted: #6b7280;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
}

html,
body {
    margin: 0;
    height: 100%;
    font-family:
        -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto,
        sans-serif;
    background: var(--color-bg);
    color: var(--color-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Layout ─────────────────────────────────────────────── */

#app {
    display: flex;
    flex-direction: column;
    height: 100dvh;
    max-width: 480px;
    margin: 0 auto;
    background: var(--color-card);
    position: relative;
    overflow: hidden;
}

.screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
}

.screen.hidden {
    display: none;
}

/* ── Header ─────────────────────────────────────────────── */

#header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 1.125rem;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-card);
    flex-shrink: 0;
}

#header h1 {
    font-size: 1rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.01em;
}

#header-user {
    font-size: 0.78rem;
    color: var(--color-muted);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

#header-username {
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#btn-logout,
#btn-refresh {
    background: none;
    border: none;
    padding: 0.3rem 0.5rem;
    cursor: pointer;
    font-size: 0.78rem;
    color: var(--color-accent);
    font-weight: 600;
    border-radius: var(--radius-xs);
    transition: background 0.15s;
}

#btn-logout:hover,
#btn-refresh:hover {
    background: var(--color-accent-light);
}

/* ── Bottom action bar ──────────────────────────────────── */

.actions {
    flex-shrink: 0;
    padding: 0.875rem 1rem;
    padding-bottom: calc(0.875rem + env(safe-area-inset-bottom, 0px));
    border-top: 1px solid var(--color-border);
    background: var(--color-card);
}

/* ── Buttons ────────────────────────────────────────────── */

button.primary {
    display: block;
    width: 100%;
    padding: 0.9rem;
    background: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    letter-spacing: -0.01em;
    transition:
        background 0.15s,
        transform 0.1s;
    -webkit-tap-highlight-color: transparent;
}

button.primary:hover {
    background: var(--color-accent-dark);
}
button.primary:active {
    transform: scale(0.98);
}

button.primary:disabled {
    background: var(--color-border);
    color: var(--color-muted);
    cursor: not-allowed;
    transform: none;
}

button.secondary {
    display: block;
    width: 100%;
    padding: 0.9rem;
    background: var(--color-card);
    color: var(--color-primary);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 0.5rem;
    transition: background 0.15s;
    -webkit-tap-highlight-color: transparent;
}

button.secondary:hover {
    background: var(--color-bg);
}

button.icon-btn {
    background: none;
    border: none;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
    border-radius: 50%;
    transition: background 0.15s;
    -webkit-tap-highlight-color: transparent;
    flex-shrink: 0;
}

button.icon-btn:hover {
    background: var(--color-bg);
}

/* ── Loading shade ──────────────────────────────────────── */

#loading-shade {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    color: #fff;
    font-weight: 600;
}

#loading-shade.visible {
    opacity: 1;
    pointer-events: all;
}

.spinner {
    width: 44px;
    height: 44px;
    border: 4px solid rgba(255, 255, 255, 0.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ── Login screen ───────────────────────────────────────── */

#screen-login {
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding: 2.5rem 2rem;
    text-align: center;
    background: var(--color-card);
}

#login-logo {
    font-size: 3.5rem;
    line-height: 1;
}

#screen-login h2 {
    margin: 0;
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

#screen-login .login-subtitle {
    margin: -1rem 0 0;
    color: var(--color-muted);
    font-size: 0.92rem;
    line-height: 1.5;
}

#login-error {
    color: var(--color-danger);
    font-size: 0.85rem;
    min-height: 1.2em;
    background: #fdecea;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    display: none;
}

#login-error:not(:empty) {
    display: block;
}

/* ── Home screen ────────────────────────────────────────── */

#screen-home {
    padding: 1rem;
    gap: 0.875rem;
}

#qr-reader-wrap {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--color-card);
}

/* Override html5-qrcode chrome — light background, readable text */
#qr-reader-wrap #html5-qrcode-button-camera-stop,
#qr-reader-wrap #html5-qrcode-button-camera-start,
#qr-reader-wrap select {
    font-size: 0.85rem;
}
#qr-reader-wrap #qr-reader {
    background: var(--color-card) !important;
}
#qr-reader-wrap #qr-reader__header_message,
#qr-reader-wrap #qr-reader__status_span,
#qr-reader-wrap #qr-reader__camera_permission_button {
    color: var(--color-primary) !important;
    background: var(--color-card) !important;
}
#qr-reader-wrap #qr-reader__dashboard {
    background: var(--color-card) !important;
}
#qr-reader-wrap #qr-reader__dashboard_section_csr > span,
#qr-reader-wrap #qr-reader__dashboard_section_fsr > span {
    color: var(--color-primary) !important;
}

/* Tappable search bar on home screen */
#search-btn {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    text-align: left;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--color-muted);
    transition:
        border-color 0.15s,
        background 0.15s;
    -webkit-tap-highlight-color: transparent;
}
#search-btn:active {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
}
#search-btn-icon {
    font-size: 1rem;
}
#search-btn-text {
    flex: 1;
}

/* Search screen */
#screen-search {
    overflow: hidden;
}

#search-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0.75rem 0.75rem 0.5rem;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

#search-title {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    flex: 1;
}

#search-input-wrap {
    position: relative;
    margin: 0.75rem 1rem 0;
    flex-shrink: 0;
}

#search-input {
    width: 100%;
    padding: 0.7rem 1rem 0.7rem 2.4rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    background: var(--color-bg);
    outline: none;
    transition:
        border-color 0.2s,
        box-shadow 0.2s;
    color: var(--color-primary);
    box-sizing: border-box;
}

#search-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(26, 107, 255, 0.12);
    background: var(--color-card);
}

#search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-muted);
    pointer-events: none;
    font-size: 0.9rem;
}

#search-results {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    overflow-y: auto;
    flex: 1;
}

.household-result-btn {
    width: 100%;
    text-align: left;
    padding: 0.875rem 1rem;
    background: var(--color-card);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.95rem;
    box-shadow: var(--shadow);
    transition:
        background 0.15s,
        border-color 0.15s,
        transform 0.1s;
    -webkit-tap-highlight-color: transparent;
}

.household-result-btn:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
}

.household-result-btn:active {
    transform: scale(0.99);
}

.household-result-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.5rem;
}
.household-result-name {
    font-weight: 700;
    font-size: 0.95rem;
}
.household-result-id {
    font-size: 0.75rem;
    color: var(--color-muted);
    font-weight: 500;
    white-space: nowrap;
}
.household-result-members {
    font-size: 0.8rem;
    color: var(--color-muted);
    margin-top: 0.25rem;
}

/* ── Member select screen ───────────────────────────────── */

#screen-members {
    padding: 0;
}

#members-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0.75rem 0.75rem 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

#members-header h2 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    flex: 1;
}

#member-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-content: start;
    gap: 0.75rem;
    padding: 1rem;
    overflow-y: auto;
    flex: 1;
}

.member-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0.5rem 0.65rem;
    background: var(--color-card);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    box-shadow: var(--shadow);
    transition:
        border-color 0.15s,
        background 0.15s,
        box-shadow 0.15s,
        transform 0.1s;
    position: relative;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.member-card:active {
    transform: scale(0.97);
}

.member-card.selected {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
    box-shadow:
        0 0 0 1px var(--color-accent),
        var(--shadow);
}

.member-card.selected.photo-needed {
    border-color: var(--color-accent);
    box-shadow:
        0 0 0 1px var(--color-accent),
        var(--shadow);
}

.member-photo-wrap {
    position: relative;
    width: 80px;
    height: 80px;
    flex-shrink: 0;
}

.member-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.photo-placeholder {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--color-bg);
    border: 2px dashed var(--color-warn);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.photo-badge {
    position: absolute;
    bottom: -2px;
    right: -2px;
    background: var(--color-warn);
    color: #fff;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 2px solid var(--color-card);
    z-index: 1;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.member-name {
    font-size: 0.82rem;
    font-weight: 600;
    text-align: center;
    word-break: break-word;
    line-height: 1.3;
    color: var(--color-primary);
}

/* ── Photo capture modal ────────────────────────────────── */

#photo-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 100;
    display: flex;
    align-items: flex-end;
}

#photo-modal-backdrop.hidden {
    display: none;
}

#photo-modal {
    background: var(--color-card);
    width: 100%;
    border-radius: 24px 24px 0 0;
    padding: 1.25rem 1rem 1rem;
    padding-bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
    box-shadow: var(--shadow-lg);
}

/* Drag handle */
#photo-modal::before {
    content: "";
    display: block;
    width: 40px;
    height: 4px;
    background: var(--color-border);
    border-radius: 2px;
    margin: -0.5rem auto 0;
}

#photo-modal h3 {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-align: center;
}

#photo-video {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: var(--radius-sm);
    background: #000;
    display: block;
}

#photo-preview {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: var(--radius-sm);
    display: block;
}

#photo-canvas {
    display: none;
}

#photo-modal-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

#photo-modal-actions button {
    margin-top: 0;
    width: 100%;
}

/* ── Toast ──────────────────────────────────────────────── */

#toast {
    position: absolute;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background: rgba(17, 19, 24, 0.92);
    backdrop-filter: blur(8px);
    color: #fff;
    padding: 0.55rem 1.1rem;
    border-radius: 100px;
    font-size: 0.88rem;
    font-weight: 500;
    white-space: nowrap;
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition:
        opacity 0.2s,
        transform 0.2s;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    max-width: calc(100% - 2rem);
    overflow: hidden;
    text-overflow: ellipsis;
}

#toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}