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feat: add password strength indicator #415

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feat: add password strength indicator #415

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c63490c
feat: add password strength indicator
Jun 22, 2026
0b3739b
refactor: standardize theme auth variables
Jun 22, 2026
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111 changes: 111 additions & 0 deletions frontend/register.html
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,58 @@
border-right: none !important;
color: rgba(255, 255, 255, 0.5) !important;
}
.password-toggle-wrapper {
position: relative;
}
.password-toggle-wrapper .custom-input {
padding-right: 3.25rem;
}
.password-toggle-btn {
position: absolute;
top: 50%;
right: 0.85rem;
transform: translateY(-50%);
border: none;
background: transparent;
color: rgba(255, 255, 255, 0.55);
padding: 0.25rem;
line-height: 1;
}
.password-toggle-btn:hover {
color: #ffffff;
}
.password-strength {
margin-top: 12px;
}
.password-strength-bar {
width: 100%;
height: 8px;
border-radius: 999px;
background: rgba(255, 255, 255, 0.12);
overflow: hidden;
}
.password-strength-bar > span {
display: block;
height: 100%;
width: 0%;
border-radius: inherit;
transition: width 0.18s ease, background-color 0.18s ease;
}
.password-strength-label {
margin-top: 8px;
font-size: 0.8rem;
font-weight: 600;
color: rgba(255, 255, 255, 0.72);
}
.password-strength-label.is-weak {
color: #f87171;
}
.password-strength-label.is-medium {
color: #fbbf24;
}
.password-strength-label.is-strong {
color: #4ade80;
}
</style>
</head>

Expand Down Expand Up @@ -148,6 +200,12 @@ <h2 class="brand-gradient mb-1" style="font-family: 'Sora', sans-serif; font-wei
<i class="bi bi-eye" aria-hidden="true"></i>
</button>
</div>
<div class="password-strength" aria-live="polite">
<div class="password-strength-bar" aria-hidden="true">
<span id="passwordStrengthBar"></span>
</div>
<div id="passwordStrengthLabel" class="password-strength-label">Strength: enter a password</div>
</div>
</div>

<div class="d-grid mb-3">
Expand All @@ -172,7 +230,60 @@ <h2 class="brand-gradient mb-1" style="font-family: 'Sora', sans-serif; font-wei

document.addEventListener('DOMContentLoaded', () => {
const form = document.querySelector('form');
const passwordInput = document.getElementById('password');
const strengthBar = document.getElementById('passwordStrengthBar');
const strengthLabel = document.getElementById('passwordStrengthLabel');

const evaluatePasswordStrength = (password) => {
const value = password || '';
let score = 0;

if (value.length >= 8) score += 1;
if (/[A-Z]/.test(value)) score += 1;
if (/[a-z]/.test(value)) score += 1;
if (/[0-9]/.test(value)) score += 1;
if (/[^A-Za-z0-9]/.test(value)) score += 1;

if (!value) {
return { label: 'enter a password', level: '', width: '0%' };
}

if (score <= 2) {
return { label: 'weak', level: 'is-weak', width: '33%' };
}

if (score <= 4) {
return { label: 'medium', level: 'is-medium', width: '66%' };
}

return { label: 'strong', level: 'is-strong', width: '100%' };
};

const updatePasswordStrength = () => {
if (!strengthBar || !strengthLabel || !passwordInput) return;
const { label, level, width } = evaluatePasswordStrength(passwordInput.value);
strengthBar.style.width = width;
strengthBar.classList.remove('bg-danger', 'bg-warning', 'bg-success');
strengthBar.style.backgroundColor = level === 'is-strong'
? '#4ade80'
: level === 'is-medium'
? '#fbbf24'
: level === 'is-weak'
? '#f87171'
: 'transparent';
strengthLabel.classList.remove('is-weak', 'is-medium', 'is-strong');
if (level) {
strengthLabel.classList.add(level);
strengthLabel.textContent = `Strength: ${label}`;
} else {
strengthLabel.textContent = 'Strength: enter a password';
}
};

if (form) {
updatePasswordStrength();
passwordInput?.addEventListener('input', updatePasswordStrength);

form.addEventListener('submit', async (e) => {
e.preventDefault();

Expand Down
35 changes: 21 additions & 14 deletions frontend/theme.css
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,13 @@
--header-bg: rgba(255, 255, 255, 0.9);
--input-bg: #ffffff;
--input-group-bg: #ffffff;
--auth-input-bg: rgba(15, 23, 42, 0.5);
--auth-input-bg-focus: rgba(15, 23, 42, 0.8);
--auth-input-border: rgba(255, 255, 255, 0.1);
--auth-input-border-focus: #00b4db;
--auth-toggle-color: rgba(255, 255, 255, 0.5);
--auth-toggle-hover: #ffffff;
--auth-toggle-focus-ring: rgba(0, 180, 219, 0.25);
--sidebar-bg-start: #0f172a;
--sidebar-bg-end: #13263f;
--sidebar-text: #f8fafc;
Expand Down Expand Up @@ -83,6 +90,13 @@
--header-bg: rgba(30, 41, 59, 0.92);
--input-bg: #1e293b;
--input-group-bg: #1e293b;
--auth-input-bg: rgba(15, 23, 42, 0.55);
--auth-input-bg-focus: rgba(15, 23, 42, 0.75);
--auth-input-border: rgba(148, 163, 184, 0.25);
--auth-input-border-focus: rgba(0, 180, 219, 0.65);
--auth-toggle-color: rgba(226, 232, 240, 0.75);
--auth-toggle-hover: #ffffff;
--auth-toggle-focus-ring: rgba(0, 180, 219, 0.6);
--sidebar-bg-start: #070d18;
--sidebar-bg-end: #0f172a;
--sidebar-text: #f1f5f9;
Expand Down Expand Up @@ -583,13 +597,6 @@ body.auth-page {
.auth-page a.text-primary {
color: var(--link-color) !important;
}


.password-toggle-btn:focus-visible {
outline: 2px solid rgba(13, 110, 253, 0.35);
outline-offset: 2px;
}

/* ── Campaigns page ── */
.overview-grid {
display: grid;
Expand Down Expand Up @@ -1251,19 +1258,19 @@ body.auth-page {

.password-toggle-wrapper .form-control {
padding-right: 3rem;
background-color: rgba(15, 23, 42, 0.55);
background-color: var(--auth-input-bg);
color: #ffffff;
border: 1px solid rgba(148, 163, 184, 0.25);
border: 1px solid var(--auth-input-border);
}

.password-toggle-wrapper .form-control::placeholder {
color: rgba(148, 163, 184, 0.8);
}

.password-toggle-wrapper .form-control:focus {
background-color: rgba(15, 23, 42, 0.75);
background-color: var(--auth-input-bg-focus);
color: #ffffff;
border-color: rgba(0, 180, 219, 0.65);
border-color: var(--auth-input-border-focus);
box-shadow: 0 0 0 0.2rem rgba(0, 180, 219, 0.15);
}

Expand All @@ -1283,7 +1290,7 @@ body.auth-page {

border: none;
background: transparent;
color: rgba(226, 232, 240, 0.75);
color: var(--auth-toggle-color);

padding: 0;
margin: 0;
Expand All @@ -1292,11 +1299,11 @@ body.auth-page {
}

.password-toggle-btn:hover {
color: #ffffff;
color: var(--auth-toggle-hover);
}

.password-toggle-btn:focus-visible {
outline: 2px solid rgba(0, 180, 219, 0.6);
outline: 2px solid var(--auth-toggle-focus-ring);
outline-offset: 2px;
border-radius: 999px;
}
Expand Down