/* ---------- THEME TOKENS ---------- */
:root {
    /* Light */
    --bg: #f5f7fb;
    --text: #0f172a;
    --muted: #64748b;
    --card: #ffffff;
    --border: #e5e7eb;
    --input: #ffffff;
    --ring: rgba(99, 102, 241, .25);
    --primary: #6366f1;
    --primary-2: #4f46e5;
    color-scheme: light dark;
}

[data-theme="dark"] {
    --bg: #0b1220;
    --text: #e6eaf2;
    --muted: #9aa4b2;
    --card: #0f172a;
    --border: #1e293b;
    --input: #0b1220;
    --ring: rgba(99, 102, 241, .35);
    --primary: #6366f1;
    --primary-2: #4f46e5;
}

/* ---------- BASE ---------- */
* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 400 16px/1.4 system-ui, -apple-system, Segoe UI, Roboto, Inter, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
    display: grid;
    place-items: center;
}

/* ---------- LAYOUT ---------- */
.login-container {
    width: 100%;
    max-width: 460px;
    padding: 24px;
}

.login-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .08);
    padding: 28px 24px;
}

.login-header {
    text-align: center;
    margin-bottom: 10px;
}

.logo img {
    max-width: 200px;
    height: auto;
}

/* ---------- FORM ---------- */
.login-form {
    margin-top: 6px;
}

.input-group {
    position: relative;
    margin: 16px 0;
}

.input-group input {
    width: 100%;
    padding: 14px 42px 14px 12px;
    border-radius: 12px;
    background: var(--input);
    color: var(--text);
    border: 1px solid var(--border);
    transition: border-color .2s, box-shadow .2s, background .2s, color .2s;
}

.input-group input::placeholder {
    color: transparent;
}

.input-group label {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    padding: 0 4px;
    pointer-events: none;
    color: var(--muted);
    background: transparent;
    transition: .15s ease;
}

.input-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 .2rem var(--ring);
    outline: 0;
    background: var(--input);
    color: var(--text);
}

.input-group input:not(:placeholder-shown)+label,
.input-group input:focus+label {
    top: -8px;
    transform: none;
    font-size: 12px;
    background: var(--card);
}

.input-border {
    position: absolute;
    left: 0;
    right: 0;
    bottom: -6px;
    height: 1px;
    background: var(--border);
}

.error-message {
    display: block;
    margin-top: 6px;
    color: #ef4444;
    font-size: 12px;
    min-height: 1em;
}

/* Password toggle */
.password-toggle {
    position: absolute;
    right: 8px;
    top: 35%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--muted);
    display: grid;
    place-items: center;
    cursor: pointer;
}

.password-toggle:hover {
    color: var(--text);
    border-color: var(--primary);
}

/* Options row */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin: 10px 0 16px;
}

.forgot-link {
    color: var(--primary-2);
    text-decoration: none;
    font-size: 14px;
}

.forgot-link:hover {
    text-decoration: underline;
}

/* Checkbox */
.checkbox-container {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.checkbox-container input {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border-radius: 6px;
    display: grid;
    place-items: center;
    border: 1px solid var(--border);
    background: var(--input);
    color: var(--text);
}

.checkbox-container input:checked+.checkmark {
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: #fff;
    border: none;
}

/* Submit button */
.submit-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 0;
    border-radius: 12px;
    padding: 12px 16px;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    cursor: pointer;
}

.btn-text {
    pointer-events: none;
}

.btn-loader {
    display: none;
}

.submit-btn[aria-busy="true"] .btn-text {
    opacity: .5;
}

.submit-btn[aria-busy="true"] .btn-loader {
    display: block;
}

/* Divider */
.divider {
    display: flex;
    align-items: center;
    gap: .75rem;
    color: var(--muted);
    margin: 18px 0 8px;
}

.divider::before,
.divider::after {
    content: "";
    height: 1px;
    flex: 1;
    background: var(--border);
}

/* Socials */
.social-buttons {
    display: flex;
    gap: 10px;
}

.social-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border);
    color: var(--text);
    background: transparent;
    text-decoration: none;
}

.social-btn:hover {
    border-color: var(--primary);
}

/* Footer link */
.signup-link {
    text-align: center;
    margin-top: 14px;
    color: var(--muted);
}

.signup-link a {
    color: var(--primary-2);
    text-decoration: none;
}

.signup-link a:hover {
    text-decoration: underline;
}

/* Success overlay */
.success-message[hidden] {
    display: none;
}

.success-message {
    text-align: center;
    margin-top: 16px;
}

.success-icon {
    margin: 8px auto;
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 10;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: var(--card);
    color: var(--text);
    border: 1px solid var(--border);
    box-shadow: 0 6px 16px rgba(0, 0, 0, .08);
    cursor: pointer;
}

.theme-toggle:hover {
    border-color: var(--primary);
}

/* Brand logo theme tokens */
:root {
    --logo-primary: #3b82f6;
    /* blue */
    --logo-secondary: #6366f1;
    /* indigo */
    --logo-text: #0f172a;
    /* light theme text */
    --logo-glow: rgba(99, 102, 241, .18);
}

[data-theme="dark"] {
    --logo-text: #e6eaf2;
    /* dark theme text */
    --logo-glow: rgba(99, 102, 241, .35);
}

/* sizing */
.brand-logo {
    display: flex;
    justify-content: center;
}

.logo-svg {
    height: 56px;
    width: auto;
}

.logo-theme .logo-dark {
    display: none;
}

[data-theme="dark"] .logo-theme .logo-light {
    display: none;
}

[data-theme="dark"] .logo-theme .logo-dark {
    display: block;
}

.logo-theme img {
    height: 56px;
    width: auto;
}

/* keep logo centered in BOTH light & dark */
.login-header {
    display: grid;
    place-items: center;
}

/* header center */
.logo {
    display: grid;
    place-items: center;
    width: 100%;
}

/* wrapper center */

.logo img,
.logo-svg {
    /* svg থাকলে একই রুল প্রযোজ্য */
    display: block;
    margin-inline: auto;
    /* LTR/RTL safe centering */
    height: 56px;
    /* আপনার পছন্দমতো */
    width: auto;
}

/* আগের কোন টেক্সট-অ্যালাইন রুল থাকলে সমস্যা না হয় */
.login-header,
.logo {
    text-align: initial;
}

.logo-theme .logo-dark {
    display: none;
}

[data-theme="dark"] .logo-theme .logo-light {
    display: none;
}

[data-theme="dark"] .logo-theme .logo-dark {
    display: block;
}

.logo-theme img {
    height: 56px;
    width: auto;
    display: block;
    margin-inline: auto;
}

.login-header {
    display: grid;
    place-items: center;
}