/* ==========================================================================
   Sicknote — base stylesheet
   Light, clean, medical. Mobile-first; desktop is a wider container.
   Theme: light tokens on :root, dark tokens under prefers-color-scheme
   (unless the user forced light) and under [data-theme="dark"].
   ========================================================================== */

:root {
    color-scheme: light;

    /* Surfaces */
    --bg:            #f6f9fb;
    --surface:       #ffffff;
    --surface-2:     #eef3f7;
    --border:        #d9e2ea;

    /* Text */
    --text:          #16232c;
    --text-muted:    #5b6b78;

    /* Accent — calm clinical teal */
    --accent:        #0f7c8c;
    --accent-hover:  #0b6270;
    --accent-soft:   #dff3f6;
    --on-accent:     #ffffff;

    /* Status */
    --success:       #1e8e5a;
    --warning:       #b7791f;
    --danger:        #c0392b;

    --focus:         #2f9fb0;
    --shadow:        0 1px 2px rgba(22, 35, 44, .06), 0 4px 12px rgba(22, 35, 44, .06);

    /* Layout */
    --container:     720px;
    --gutter:        16px;
    --radius:        12px;
    --radius-sm:     8px;
    --header-h:      56px;

    --font:          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        color-scheme: dark;
        --bg:           #0f1a20;
        --surface:      #172630;
        --surface-2:    #1f313c;
        --border:       #2c4150;
        --text:         #e6eef3;
        --text-muted:   #9db0bd;
        --accent:       #3fb7c9;
        --accent-hover: #63c8d7;
        --accent-soft:  #163a44;
        --on-accent:    #06232a;
        --success:      #4cc38a;
        --warning:      #e0a94a;
        --danger:       #ef6f61;
        --focus:        #63c8d7;
        --shadow:       0 1px 2px rgba(0, 0, 0, .3), 0 4px 12px rgba(0, 0, 0, .3);
    }
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --bg:           #0f1a20;
    --surface:      #172630;
    --surface-2:    #1f313c;
    --border:       #2c4150;
    --text:         #e6eef3;
    --text-muted:   #9db0bd;
    --accent:       #3fb7c9;
    --accent-hover: #63c8d7;
    --accent-soft:  #163a44;
    --on-accent:    #06232a;
    --success:      #4cc38a;
    --warning:      #e0a94a;
    --danger:       #ef6f61;
    --focus:        #63c8d7;
    --shadow:       0 1px 2px rgba(0, 0, 0, .3), 0 4px 12px rgba(0, 0, 0, .3);
}

/* --------------------------------------------------------------------------
   Reset & base
   -------------------------------------------------------------------------- */

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

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

body {
    margin: 0;
    min-height: 100%;
    display: flex;
    flex-direction: column;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg, video { max-width: 100%; height: auto; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.25; font-weight: 600; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.1rem; }
p  { margin: 0 0 1em; }

button, input, select, textarea { font: inherit; color: inherit; }

:focus-visible {
    outline: 2px solid var(--focus);
    outline-offset: 2px;
}

[hidden] { display: none !important; }

.container {
    width: 100%;
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: max(var(--gutter), env(safe-area-inset-left, 0px)) max(var(--gutter), env(safe-area-inset-right, 0px));
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    padding: .5rem .75rem;
    background: var(--accent);
    color: var(--on-accent);
    border-radius: 0 0 var(--radius-sm) 0;
    z-index: 100;
}
.skip-link:focus { left: 0; }

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.app-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding-top: env(safe-area-inset-top, 0px);
}

.app-header__inner {
    min-height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
    font-weight: 600;
    font-size: 1.125rem;
    letter-spacing: -.01em;
}
.brand:hover { text-decoration: none; color: var(--text); }

.brand__mark {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: block;
}

.brand__version {
    font-size: .75rem;
    font-weight: 500;
    color: var(--text-muted);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 1px 8px;
    line-height: 1.4;
}

/* Menu button — three vertical dots that unfold into a cross */

.burger {
    --dot: 5px;
    --dot-gap: 7px;
    position: relative;
    width: 44px;
    height: 44px;
    margin: 0 -10px 0 auto;      /* pull to the edge, keep a 44px touch target */
    padding: 0;
    border: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text);
    cursor: pointer;
    z-index: 70;                 /* above the drawer so it stays clickable */
}
.burger:hover { background: var(--surface-2); }
.burger__bar {
    position: absolute;
    left: 50%;
    top: 50%;
    width: var(--dot);
    height: var(--dot);
    margin: calc(var(--dot) / -2) 0 0 calc(var(--dot) / -2);
    border-radius: 999px;
    background: currentColor;
    transition: transform .25s ease, opacity .2s ease, width .25s ease, height .25s ease, margin .25s ease;
}
.burger__bar:nth-child(1) { transform: translateY(calc(-1 * var(--dot-gap))); }
.burger__bar:nth-child(2) { transform: translateY(0); }
.burger__bar:nth-child(3) { transform: translateY(var(--dot-gap)); }
/* Open: the outer dots stretch into 2px bars and rotate into an X, the middle dot fades. */
.burger.is-open .burger__bar:nth-child(1),
.burger.is-open .burger__bar:nth-child(3) {
    width: 22px;
    height: 2px;
    margin: -1px 0 0 -11px;
    border-radius: 2px;
}
.burger.is-open .burger__bar:nth-child(1) { transform: rotate(45deg); }
.burger.is-open .burger__bar:nth-child(2) { opacity: 0; transform: scale(0); }
.burger.is-open .burger__bar:nth-child(3) { transform: rotate(-45deg); }

/* Slide-in menu drawer */

.app-menu-backdrop {
    position: fixed;
    inset: 0;
    z-index: 55;
    background: rgba(15, 26, 32, .45);
    opacity: 0;
    transition: opacity .25s ease;
}
.app-menu-backdrop.is-open { opacity: 1; }

.app-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 60;
    width: min(320px, 85vw);
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: calc(var(--header-h) + env(safe-area-inset-top, 0px) + 8px) 16px calc(16px + env(safe-area-inset-bottom, 0px));
    background: var(--surface);
    border-left: 1px solid var(--border);
    box-shadow: -8px 0 24px rgba(0, 0, 0, .12);
    transform: translateX(100%);
    transition: transform .25s ease;
    overflow-y: auto;
}
.app-menu.is-open { transform: translateX(0); }
html.menu-open, html.menu-open body { overflow: hidden; }

.app-menu__user {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 8px 4px 14px;
    border-bottom: 1px solid var(--border);
}
.app-menu__name { font-weight: 600; overflow-wrap: anywhere; }
.app-menu__email { font-size: .8125rem; color: var(--text-muted); overflow-wrap: anywhere; }

.app-menu__nav {
    list-style: none;
    margin: 4px 0;
    padding: 0;
}
.app-menu__nav a {
    display: block;
    padding: 12px 8px;
    border-radius: var(--radius-sm);
    color: var(--text);
    font-weight: 500;
}
.app-menu__nav a:hover { background: var(--surface-2); text-decoration: none; }
.app-menu__nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); }

.app-menu__section {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px 4px;
    border-top: 1px solid var(--border);
}
.app-menu__label { font-size: .75rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--text-muted); }
.app-menu .theme-switch { align-self: flex-start; }

.app-menu__signout {
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}
.app-menu__signout .btn { width: 100%; }

/* Theme switch — segmented control */

.theme-switch {
    display: inline-flex;
    padding: 3px;
    gap: 2px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 999px;
}

.theme-switch button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 32px;
    padding: 0 10px;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: background .15s, color .15s;
}
.theme-switch button:hover { color: var(--text); }
.theme-switch button[aria-checked="true"] {
    background: var(--surface);
    color: var(--accent);
    box-shadow: var(--shadow);
}
.theme-switch svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
}
.theme-switch button[data-theme-value="auto"] svg,
.theme-switch button[data-theme-value="dark"] svg { fill: currentColor; stroke: none; }
.theme-switch span { font-size: .8125rem; font-weight: 500; }

/* Icons only on narrow phones */
@media (max-width: 420px) {
    .theme-switch span {
        position: absolute;
        width: 1px; height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
        white-space: nowrap;
    }
    .theme-switch button { padding: 0 9px; }
}

/* --------------------------------------------------------------------------
   Buttons & alerts
   -------------------------------------------------------------------------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 44px;
    padding: 0 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text);
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s, border-color .15s, box-shadow .15s;
}
.btn:hover { background: var(--surface-2); text-decoration: none; color: var(--text); }
.btn--sm { min-height: 32px; padding: 0 12px; font-size: .8125rem; }
.btn--ghost { background: transparent; }
.btn--provider {
    width: 100%;
    box-shadow: var(--shadow);
}
.btn--provider svg { width: 20px; height: 20px; flex: none; }

.alert {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--surface-2);
    font-size: .9375rem;
}
.alert--danger {
    color: var(--danger);
    border-color: color-mix(in srgb, var(--danger) 40%, transparent);
    background: color-mix(in srgb, var(--danger) 10%, var(--surface));
}
.alert--success {
    color: var(--success);
    border-color: color-mix(in srgb, var(--success) 40%, transparent);
    background: color-mix(in srgb, var(--success) 10%, var(--surface));
}
.btn--primary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--on-accent);
}
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); }

/* --------------------------------------------------------------------------
   Cards & forms
   -------------------------------------------------------------------------- */

.card {
    padding: 20px;
    margin-bottom: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.card h2 { font-size: 1.0625rem; margin-bottom: 10px; }
.card > p:last-child { margin-bottom: 0; }

.help { color: var(--text-muted); font-size: .875rem; }

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label { font-size: .875rem; font-weight: 500; }

.input {
    width: 100%;
    min-height: 44px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
    font-size: 16px;                 /* 16px stops iOS zooming into the field */
}
.input:focus { outline: none; border-color: var(--focus); box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 25%, transparent); }

.field--error .input { border-color: var(--danger); }
.field__error { font-size: .8125rem; color: var(--danger); }
.unit { font-weight: 400; color: var(--text-muted); font-size: .8125rem; }

.fieldset { border: 0; padding: 0; margin: 0 0 14px; min-width: 0; }
.fieldset legend { font-size: .875rem; font-weight: 500; padding: 0; margin-bottom: 6px; }
.fieldset.field--error .input { border-color: var(--danger); }

.field-row { display: flex; align-items: flex-start; gap: 10px; }
.field-row .field { flex: 1 1 0; min-width: 0; }
.field-row--wrap { flex-wrap: wrap; }
.field-row--wrap .field { flex: 1 1 140px; }
.field-row__sep { align-self: center; padding-top: 22px; font-size: 1.25rem; color: var(--text-muted); }

/* Feeling slider */
.feeling__value { font-weight: 600; color: var(--accent); margin-left: 6px; }
.feeling__scale { display: flex; justify-content: space-between; font-size: .75rem; color: var(--text-muted); }
.range {
    --fill: 50%;
    width: 100%;
    height: 44px;
    margin: 0;
    background: transparent;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}
.range::-webkit-slider-runnable-track {
    height: 6px;
    border-radius: 999px;
    background: linear-gradient(to right, var(--accent) var(--fill), var(--border) var(--fill));
}
.range::-moz-range-track { height: 6px; border-radius: 999px; background: var(--border); }
.range::-moz-range-progress { height: 6px; border-radius: 999px; background: var(--accent); }
.range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 28px;
    height: 28px;
    margin-top: -11px;
    border-radius: 50%;
    border: 2px solid var(--accent);
    background: var(--surface);
    box-shadow: var(--shadow);
}
.range::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--accent);
    background: var(--surface);
    box-shadow: var(--shadow);
}
.range:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 999px; }

.form-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.form-actions--stack { flex-direction: column; }
.form-actions--stack .btn { width: 100%; }
.alert + .card, h1 + .card { margin-top: 16px; }
.alert { margin-bottom: 16px; }

/* --------------------------------------------------------------------------
   Login screen
   -------------------------------------------------------------------------- */

.login {
    max-width: 380px;
    margin: 6vh auto 0;
    padding: 28px 24px 32px;
    text-align: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.login__logo { display: block; margin: 0 auto 16px; border-radius: 50%; }
.login__title { font-size: 1.375rem; margin-bottom: 4px; }
.login__lead { color: var(--text-muted); margin-bottom: 20px; }
.login .alert { text-align: left; margin-bottom: 16px; }
.login__providers { display: grid; gap: 12px; }

/* --------------------------------------------------------------------------
   Main & footer
   -------------------------------------------------------------------------- */

.app-main {
    flex: 1 0 auto;
    padding-block: 20px;
}

.app-footer {
    border-top: 1px solid var(--border);
    background: var(--surface);
    padding-bottom: env(safe-area-inset-bottom, 0px);
}

.app-footer__inner {
    padding-block: 16px;
    font-size: .75rem;
    line-height: 1.45;
    color: var(--text-muted);
    text-align: center;
}
.app-footer__inner p { margin: 0 0 .5em; }
.app-footer__inner p:last-child { margin-bottom: 0; }
.app-footer__inner strong { color: var(--text); letter-spacing: .02em; }
.app-footer__title { font-size: .8125rem; font-weight: 600; color: var(--text); }
.app-footer__copyright { margin-top: .75em; }

@media (min-width: 720px) {
    :root { --header-h: 64px; }
    .app-main { padding-block: 32px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; }
    .app-menu { transform: none; }
    .app-menu[hidden] { display: none; }
}