/* ==========================================================================
   VAULTARA DESIGN SYSTEM (v3, "warm paper")
   Warm off-white ground, charcoal ink, one deep-green accent, soft pastel
   tints for document categories. Serif display type, clean sans for the UI.
   Surfaces are separated by tone steps first; a 1px warm line is used only
   on inputs and cards. No gradients, no glows, no shadows at rest.
   ========================================================================== */

:root {
    /* Ground and surfaces (tone steps, light to dark) */
    --paper: #F6F3EC;
    --paper-2: #EEEAE0;
    --surface: #FDFCF9;
    --raised: #FFFFFF;

    /* Ink */
    --ink: #1E1C18;
    --ink-2: #57524A;
    --ink-3: #7A746A;

    /* Lines */
    --line: #E3DDD0;
    --line-strong: #CFC8B8;

    /* The one accent */
    --accent: #1F5C46;
    --accent-hover: #184B39;
    --accent-tint: #E2ECE6;
    --accent-ink: #174A38;

    /* Category and status tints (background / text) */
    --identity-bg: #E3EDF4;   --identity-fg: #1D5680;
    --education-bg: #F4ECD0;  --education-fg: #74560F;
    --health-bg: #F5E2DE;     --health-fg: #8A3A32;
    --family-bg: #ECE5F2;     --family-fg: #55407F;
    --warn-bg: #FAF0D2;       --warn-fg: #7A5A12;
    --danger: #A23A31;
    --danger-bg: #F7E4E1;

    /* Type */
    --font-display: 'Newsreader', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
    --font-ui: 'Geist', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

    /* Shape */
    --radius-lg: 14px;
    --radius: 10px;
    --radius-sm: 6px;

    /* Motion */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

    /* Layers */
    --z-nav: 20;
    --z-toast: 60;
    --z-dialog: 50;

    color-scheme: light;
}

/* --- Reset and base ---------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-tap-highlight-color: rgba(31, 92, 70, 0.12); }
a, button, input, select, label, summary { touch-action: manipulation; }
body {
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-ui);
    font-size: 1rem;
    line-height: 1.6;
    min-height: 100dvh;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.02em; line-height: 1.1; text-wrap: balance; }
p { text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
button { border: none; background: none; cursor: pointer; font: inherit; color: inherit; }
img, svg { display: block; max-width: 100%; }
::selection { background: var(--accent-tint); color: var(--accent-ink); }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: var(--radius-sm); }

.skip-link {
    position: absolute; left: 16px; top: -48px; z-index: 100;
    background: var(--ink); color: var(--paper); padding: 10px 16px; border-radius: var(--radius-sm);
    transition: top 0.2s var(--ease-out);
}
.skip-link:focus { top: 16px; }

.ph-bold { font-size: 1.25em; line-height: 1; flex-shrink: 0; }

/* --- Buttons ----------------------------------------------------------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    min-height: 44px; padding: 0 20px;
    border-radius: var(--radius); border: 1px solid transparent;
    font-size: 0.9375rem; font-weight: 500; line-height: 1; white-space: nowrap;
    transition: background-color 0.2s, border-color 0.2s, color 0.2s, transform 0.15s var(--ease-out);
}
.btn:active { transform: scale(0.98); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; transform: none; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not([disabled]) { background: var(--accent-hover); }

.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--line-strong); }
.btn-secondary:hover:not([disabled]) { background: var(--raised); border-color: var(--ink-3); }

.btn-ghost { color: var(--ink-2); padding: 0 12px; }
.btn-ghost:hover:not([disabled]) { background: var(--paper-2); color: var(--ink); }

.btn-danger-ghost { color: var(--ink-2); padding: 0 12px; }
.btn-danger-ghost:hover:not([disabled]) { background: var(--danger-bg); color: var(--danger); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not([disabled]) { background: #8A2F27; }

.btn-block { width: 100%; }
.btn-sm { min-height: 36px; padding: 0 14px; font-size: 0.875rem; }
.btn-icon { width: 44px; padding: 0; }

/* --- Forms ------------------------------------------------------------- */
.form-group { margin-bottom: 22px; }
.form-group > label, .label {
    display: block; margin-bottom: 8px;
    font-size: 0.875rem; font-weight: 500; color: var(--ink);
}
.hint { margin-top: 8px; font-size: 0.8125rem; color: var(--ink-2); line-height: 1.5; }

input[type="text"], input[type="email"], input[type="password"], select {
    width: 100%; min-height: 46px; padding: 10px 14px;
    background: var(--raised); color: var(--ink);
    border: 1px solid var(--line-strong); border-radius: var(--radius);
    font: inherit; font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
input::placeholder { color: var(--ink-3); }
input:hover, select:hover { border-color: var(--ink-3); }
input:focus, select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-tint); }
select {
    appearance: none; -webkit-appearance: none; padding-right: 40px; cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 256 256'%3E%3Cpath fill='%2357524A' d='M213.7 101.7l-80 80a8 8 0 0 1-11.4 0l-80-80a8 8 0 0 1 11.4-11.4L128 164.7l74.3-74.4a8 8 0 0 1 11.4 11.4z'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 14px center;
}
.field-inline { position: relative; }
.field-inline.has-icon > .ph-bold { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--ink-3); pointer-events: none; }
.field-inline.has-icon > input { padding-left: 42px; }
.field-inline.has-action > input { padding-right: 52px; }
.field-action { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); }

.mono-input { font-variant-numeric: tabular-nums; letter-spacing: 0.04em; text-transform: uppercase; }

/* File drop area */
.dropzone {
    position: relative; display: flex; flex-direction: column; align-items: center; gap: 6px;
    padding: 32px 20px; text-align: center;
    background: var(--surface); border: 1.5px dashed var(--line-strong); border-radius: var(--radius-lg);
    transition: border-color 0.2s, background-color 0.2s;
}
.dropzone:hover, .dropzone.is-over { border-color: var(--accent); background: var(--accent-tint); }
.dropzone .ph-bold { font-size: 2rem; color: var(--accent); }
.dropzone strong { font-weight: 500; }
.dropzone small { color: var(--ink-2); font-size: 0.8125rem; }
.dropzone input[type="file"] { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.dropzone .file-name { font-weight: 500; color: var(--accent-ink); overflow-wrap: anywhere; }

/* Inline status messages (replace alert()) */
.status {
    display: none; align-items: flex-start; gap: 10px;
    margin-bottom: 20px; padding: 12px 14px;
    border-radius: var(--radius); font-size: 0.9375rem; line-height: 1.45;
}
.status:not(:empty) { display: flex; }
.status[data-state="error"] { background: var(--danger-bg); color: var(--danger); }
.status[data-state="success"] { background: var(--accent-tint); color: var(--accent-ink); }
.status[data-state="info"] { background: var(--identity-bg); color: var(--identity-fg); }

/* --- Auth page --------------------------------------------------------- */
.auth-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); min-height: 100dvh; }
.auth-aside {
    display: flex; flex-direction: column; justify-content: space-between; gap: 48px;
    padding: 40px 56px 56px; background: var(--paper-2);
}
.auth-aside h2 { font-size: clamp(2.25rem, 3.4vw, 3.25rem); max-width: 14ch; }
.auth-aside p { color: var(--ink-2); max-width: 36ch; margin-top: 20px; }
.auth-points { display: grid; gap: 14px; margin-top: 8px; list-style: none; }
.auth-points li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink-2); font-size: 0.9375rem; }
.auth-points .ph-bold { color: var(--accent); margin-top: 3px; }
.auth-main { display: flex; align-items: center; justify-content: center; padding: 40px 24px; }
.auth-panel { width: 100%; max-width: 400px; }
.auth-panel h1 { font-size: 2.25rem; margin-bottom: 10px; }
.auth-panel .lede { color: var(--ink-2); margin-bottom: 32px; }
.auth-switch { margin-top: 20px; text-align: center; font-size: 0.9375rem; color: var(--ink-2); }
.link-btn { color: var(--accent); font-weight: 500; text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.link-btn:hover { color: var(--accent-hover); }

/* --- Brand ------------------------------------------------------------- */
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 1.5rem; font-weight: 500; letter-spacing: -0.02em; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: var(--accent); color: #fff; }
.brand-mark .ph-bold { font-size: 20px; }

/* --- App shell --------------------------------------------------------- */
.app { display: grid; grid-template-columns: 248px minmax(0, 1fr); min-height: 100dvh; }
.sidebar {
    position: sticky; top: 0; height: 100dvh;
    display: flex; flex-direction: column; justify-content: space-between; gap: 24px;
    padding: 28px 16px 20px; background: var(--paper-2);
}
.sidebar .brand { padding: 0 10px; margin-bottom: 36px; }
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav-link {
    display: flex; align-items: center; gap: 12px; min-height: 44px; padding: 0 12px;
    border-radius: var(--radius); color: var(--ink-2); font-size: 0.9375rem; font-weight: 500;
    transition: background-color 0.2s, color 0.2s;
}
.nav-link:hover { background: rgba(30, 28, 24, 0.05); color: var(--ink); }
.nav-link[aria-current="page"] { background: var(--raised); color: var(--ink); }
.nav-link[aria-current="page"] .ph-bold { color: var(--accent); }
.sidebar-foot { display: grid; gap: 10px; }
.sidebar-user { padding: 0 12px; font-size: 0.8125rem; color: var(--ink-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.main { padding: 48px 56px 80px; min-width: 0; }
.main-inner { max-width: 1080px; margin: 0 auto; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 36px; flex-wrap: wrap; }
.page-head h1 { font-size: clamp(2rem, 3vw, 2.75rem); }
.page-head p { margin-top: 10px; color: var(--ink-2); max-width: 52ch; }
.page-stat { text-align: right; }
.page-stat .hint { margin-top: 4px; }
.doc-tile { background: var(--paper-2); color: var(--ink-2); }
.page-count { font-family: var(--font-display); font-size: 2.75rem; line-height: 1; color: var(--accent); font-variant-numeric: tabular-nums; }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px; }
.panel-narrow { max-width: 620px; }

/* Verify banner */
.banner {
    display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
    margin-bottom: 28px; padding: 14px 16px; border-radius: var(--radius-lg);
    background: var(--warn-bg); color: var(--warn-fg);
}
.banner-text { display: flex; align-items: center; gap: 12px; }
.banner strong { font-weight: 600; }
.banner p { font-size: 0.875rem; }

/* Toolbar */
.toolbar { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 12px; margin-bottom: 28px; }

/* --- Document cards ---------------------------------------------------- */
.doc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 18px; }
.doc-card {
    display: flex; flex-direction: column; gap: 20px; padding: 22px;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
    transition: background-color 0.2s, border-color 0.2s, transform 0.25s var(--ease-out);
}
.doc-card:hover { background: var(--raised); border-color: var(--line-strong); transform: translateY(-2px); }
.doc-top { display: flex; gap: 14px; align-items: flex-start; }
.doc-tile { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 12px; font-size: 1.375rem; flex-shrink: 0; }
.doc-tile[data-cat="Identity"] { background: var(--identity-bg); color: var(--identity-fg); }
.doc-tile[data-cat="Education"] { background: var(--education-bg); color: var(--education-fg); }
.doc-tile[data-cat="Health"] { background: var(--health-bg); color: var(--health-fg); }
.doc-title { font-family: var(--font-ui); font-size: 1rem; font-weight: 600; letter-spacing: -0.005em; line-height: 1.35; overflow-wrap: anywhere; }
.doc-meta { margin-top: 4px; font-size: 0.8125rem; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.doc-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: auto; }
.doc-actions { display: flex; gap: 4px; }

.badge {
    display: inline-flex; align-items: center; gap: 6px; padding: 4px 9px;
    border-radius: var(--radius-sm); font-size: 0.75rem; font-weight: 500; line-height: 1.3; white-space: nowrap;
}
.badge-owner { background: var(--accent-tint); color: var(--accent-ink); }
.badge-shared { background: var(--identity-bg); color: var(--identity-fg); }
.badge-family { background: var(--family-bg); color: var(--family-fg); }
.badge-warn { background: var(--warn-bg); color: var(--warn-fg); }
.badge-ok { background: var(--accent-tint); color: var(--accent-ink); }

/* Skeletons and empty states */
.skeleton { background: var(--paper-2); border-radius: var(--radius-lg); min-height: 148px; animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.55; } }
.empty { grid-column: 1 / -1; display: flex; flex-direction: column; align-items: flex-start; gap: 14px; padding: 48px 40px; background: var(--surface); border: 1px dashed var(--line-strong); border-radius: var(--radius-lg); }
.empty .ph-bold { font-size: 2rem; color: var(--accent); }
.empty h2 { font-size: 1.75rem; }
.empty p { color: var(--ink-2); max-width: 44ch; }

/* --- Activity ---------------------------------------------------------- */
.log-list { list-style: none; display: grid; }
.log-row { display: grid; grid-template-columns: 190px 150px minmax(0, 1fr); gap: 16px; align-items: center; padding: 16px 4px; border-bottom: 1px solid var(--line); }
.log-row:last-child { border-bottom: none; }
.log-time { font-size: 0.875rem; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.log-detail { color: var(--ink); overflow-wrap: anywhere; }
.log-badge { background: var(--paper-2); color: var(--ink); justify-self: start; }
.log-badge[data-action="LOGIN"], .log-badge[data-action="REGISTER"] { background: var(--accent-tint); color: var(--accent-ink); }
.log-badge[data-action="UPLOAD"] { background: var(--identity-bg); color: var(--identity-fg); }
.log-badge[data-action="SHARE"] { background: var(--family-bg); color: var(--family-fg); }
.log-badge[data-action="DELETE"] { background: var(--danger-bg); color: var(--danger); }
.log-badge[data-action="PROFILE_UPDATE"] { background: var(--education-bg); color: var(--education-fg); }

/* --- Profile ----------------------------------------------------------- */
.profile-head { display: flex; align-items: center; gap: 16px; margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.avatar { display: grid; place-items: center; width: 56px; height: 56px; border-radius: 16px; background: var(--accent-tint); color: var(--accent-ink); font-size: 1.75rem; }
.profile-head h2 { font-family: var(--font-ui); font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.005em; overflow-wrap: anywhere; }
.profile-head .badge { margin-top: 6px; }
.profile-head button.badge { cursor: pointer; }
.family-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; }

/* --- Dialog and toast -------------------------------------------------- */
dialog.dialog {
    margin: auto; width: min(420px, calc(100vw - 32px)); padding: 28px;
    background: var(--raised); color: var(--ink);
    border: 1px solid var(--line); border-radius: var(--radius-lg);
    box-shadow: 0 24px 60px -20px rgba(30, 28, 24, 0.35);
}
dialog.dialog { overscroll-behavior: contain; }
dialog.dialog::backdrop { background: rgba(30, 28, 24, 0.4); }
dialog.dialog h2 { font-size: 1.5rem; margin-bottom: 10px; }
dialog.dialog p { color: var(--ink-2); margin-bottom: 24px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; }

.toast-region { position: fixed; right: 20px; bottom: 20px; z-index: var(--z-toast); display: grid; gap: 10px; width: min(360px, calc(100vw - 40px)); }
.toast {
    display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px;
    background: var(--ink); color: var(--paper); border-radius: var(--radius);
    font-size: 0.9375rem; line-height: 1.45;
    box-shadow: 0 12px 32px -12px rgba(30, 28, 24, 0.5);
    animation: toast-in 0.35s var(--ease-out);
}
.toast[data-type="error"] { background: var(--danger); }
.toast .ph-bold { margin-top: 1px; }
@keyframes toast-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

/* --- Mobile nav -------------------------------------------------------- */
.mobile-nav { display: none; }

@media (max-width: 860px) {
    .auth-split { grid-template-columns: 1fr; }
    .auth-aside { display: none; }
    .auth-main { align-items: flex-start; padding-top: 56px; }

    .app { grid-template-columns: 1fr; }
    .sidebar { display: none; }
    .main { padding: 28px 20px 112px; }
    .panel { padding: 22px; }
    .toolbar { grid-template-columns: 1fr; }
    .page-stat { text-align: left; }
    .log-row { grid-template-columns: 1fr; gap: 6px; padding: 14px 4px; }
    .mobile-nav {
        position: fixed; left: 0; right: 0; bottom: 0; z-index: var(--z-nav);
        display: grid; grid-template-columns: repeat(5, 1fr);
        padding: 8px 8px calc(8px + env(safe-area-inset-bottom));
        background: var(--paper-2);
    }
    .mobile-nav a {
        display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
        min-height: 52px; border-radius: var(--radius); color: var(--ink-2); font-size: 0.6875rem; font-weight: 500;
    }
    .mobile-nav a .ph-bold { font-size: 22px; }
    .mobile-nav a[aria-current="page"] { background: var(--raised); color: var(--ink); }
    .mobile-nav a[aria-current="page"] .ph-bold { color: var(--accent); }
    .toast-region { bottom: 88px; }
}

/* --- Motion: quiet entrance, transform and opacity only ------------------ */
@media (prefers-reduced-motion: no-preference) {
    .reveal { animation: rise 0.6s var(--ease-out) backwards; }
    .reveal-1 { animation-delay: 0.05s; }
    .reveal-2 { animation-delay: 0.12s; }
    .reveal-3 { animation-delay: 0.19s; }
    .doc-card { animation: rise 0.55s var(--ease-out) backwards; animation-delay: calc(var(--i, 0) * 50ms); }
    @keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .skeleton { animation: none; }
    * { transition-duration: 0.01ms !important; }
}