*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg:      #202123;
    --bg-alt:  #4a3e3e;
    --surface: #0e0e0e;
    --border:  #2f333c;
    --text:    #eed3d3;
    --muted:   #af9090;
    --accent:  #f74f4f;
    --accent-h:#e83a3a;
    --input-focus-shadow: rgba(247, 79, 79, 0.12);
    --danger:  #dc2626;
    --danger-border:  #541313;
    --info-border:  #263997;
    --info-fg: #3a57e8;
    --info-bg: #22232b;
    --radius:  12px;
    --shadow:  0 4px 24px rgba(0,0,0,.08);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100dvh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
}

/*  Card  */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
    padding: 2.25rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.card__logo {
    display: flex;
    align-items: center;
    gap: .6rem;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--accent);
}

.card__title {
    font-size: 1.45rem;
    font-weight: 700;
    line-height: 1.2;
}

.card__sub {
    font-size: .875rem;
    color: var(--muted);
    margin-top: -.75rem;
}

/*  Alert  */
.alert {
    background: var(--bg-alt);
    border: 1px solid var(--danger-border);
    color: var(--danger);
    border-radius: 8px;
    padding: .7rem 1rem;
    font-size: .875rem;
}

.info-box {
    background: var(--info-bg);
    border: 1px solid var(--info-border);
    color: var(--info-fg);
    border-radius: 8px;
    padding: .7rem 1rem;
    font-size: .875rem;
}

/*  Form  */
form { display: flex; flex-direction: column; gap: 1rem; }

.field {
    display: flex;
    flex-direction: column;
    gap: .35rem;
}

.field label {
    font-size: .8rem;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .04em;
}
/* 
.field input:autofill,
.field input:-webkit-autofill,
.field input:-webkit-autofill:hover, 
.field input:-webkit-autofill:focus,
.field textarea:-webkit-autofill,
.field textarea:-webkit-autofill:hover,
.field textarea:-webkit-autofill:focus,
.field select:-webkit-autofill,
.field select:-webkit-autofill:hover,
.field select:-webkit-autofill:focus
.field input:-internal-autofill-selected,
*/
.field input[type="text"],
.field input[type="password"] {
    /* color-scheme: dark; */
    width: 100%;
    padding: .65rem .85rem;
    border: 1.5px solid var(--border) !important;
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text) !important;
    background: var(--surface) !important;
    transition: border-color .15s;
    outline: none;
}

/* Change autocomplete styles in WebKit */
input:-webkit-autofill,
input:-webkit-autofill:hover, 
input:-webkit-autofill:focus,
textarea:-webkit-autofill,
textarea:-webkit-autofill:hover,
textarea:-webkit-autofill:focus,
select:-webkit-autofill,
select:-webkit-autofill:hover,
select:-webkit-autofill:focus {
  border: 1.5px solid var(--border);
  -webkit-text-fill-color: var(--text);
  -webkit-box-shadow: 0 0 0px 1000px var(--surface) inset;
  transition: background-color 5000s ease-in-out 0s;
};

.field input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--input-focus-shadow);
}

/* Password toggle */
.field__pw { position: relative; }
.field__pw input { padding-right: 2.8rem; }
.pw-toggle {
    position: absolute;
    right: .7rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--muted);
    padding: .25rem;
    line-height: 1;
    display: flex;
    align-items: center;
}
.pw-toggle:hover { color: var(--accent); }

/* Row field (checkbox row) */
.field--row {
    flex-direction: row;
    align-items: center;
}

/*  Checkbox  */
.checkbox {
    display: flex;
    align-items: center;
    gap: .5rem;
    cursor: pointer;
    font-size: .9rem;
    user-select: none;
}

.checkbox input[type="checkbox"] { display: none; }

.checkbox__box {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-radius: 4px;
    display: grid;
    place-items: center;
    flex-shrink: 0;
    transition: border-color .15s, background .15s;
}

.checkbox input:checked + .checkbox__box {
    background: var(--accent);
    border-color: var(--accent);
}

.checkbox__box::after {
    content: '';
    width: 10px;
    height: 6px;
    border-left: 2px solid #fff;
    border-bottom: 2px solid #fff;
    transform: rotate(-45deg) translate(1px, -1px);
    opacity: 0;
    transition: opacity .1s;
}

.checkbox input:checked + .checkbox__box::after { opacity: 1; }

/*  Buttons  */
.btn {
    display: block;
    width: 100%;
    padding: .75rem;
    background: var(--accent);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: background .15s, transform .1s;
}

.btn:hover { background: var(--accent-h); }
.btn:active { transform: scale(.98); }

.btn--outline {
    background: transparent;
    border: 1.5px solid var(--border);
    color: var(--text);
}

.btn--outline:hover {
    background: var(--bg);
    border-color: var(--accent);
    color: var(--accent);
}

/*  Footer link  */
.card__footer {
    text-align: center;
    font-size: .875rem;
    color: var(--muted);
}
.card__footer a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}
.card__footer a:hover { text-decoration: underline; }

/*  Field extras  */
.required { color: var(--danger); }
.optional  { color: var(--muted); font-weight: 400; font-size: .8em; }

.field__hint {
    font-size: .78rem;
    color: var(--muted);
}

.field__error {
    font-size: .8rem;
    color: var(--danger);
}

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

.field--error input:focus {
    box-shadow: 0 0 0 3px rgba(220,38,38,.12);
}

/*  Password strength bar  */
.strength {
    height: 4px;
    background: var(--border);
    border-radius: 99px;
    overflow: hidden;
    margin-top: -.5rem;
}

.strength__bar {
    height: 100%;
    width: 0;
    border-radius: 99px;
    transition: width .3s, background .3s;
    background: var(--border);
}

.strength__bar.weak   { background: #ef4444; }
.strength__bar.fair   { background: #f97316; }
.strength__bar.good   { background: #eab308; }
.strength__bar.strong { background: #22c55e; }

.hidden {
  display: none;
}