/* plum-portal — login screen
 *
 * Matches Plum Box device UI tone:
 *   (a) .portal-tag subtitle
 *   (b) email + password form (relay resolves subdomain automatically)
 *   (c) .portal-footer with pulsing .relay-dot
 *   (d) dynamic button states handled in app.js
 *   (e) monochrome accents — kept in sync with device UI
 */

:root {
    --bg-primary: #000000;
    --bg-tertiary: #000000;
    --border-color: #2f3336;
    --text-primary: #e7e9ea;
    --text-secondary: #71767b;
    --accent-color: #ffffff;
    --accent-hover: #d6d9db;
    --error: #f4212e;

    --radius: 8px;
    --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
        Roboto, 'Helvetica Neue', Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg-primary: #ffffff;
        --bg-tertiary: #eff3f4;
        --border-color: #cfd9de;
        --text-primary: #0f1419;
        --text-secondary: #536471;
        --accent-color: #000000;
        --accent-hover: #222222;
    }
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-stack);
    font-size: 15px;
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.auth-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.auth-box {
    width: 100%;
    max-width: 360px;
    padding: 40px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.auth-logo {
    text-align: center;
    margin-bottom: 32px;
    color: var(--accent-color);
}

.auth-logo .logo-icon {
    display: block;
    margin: 0 auto 12px;
}

.auth-logo .logo-inner {
    fill: var(--bg-primary);
}

.auth-logo h1 {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.2px;
    color: var(--text-primary);
}

/* (a) portal subtitle */
.portal-tag {
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 0.5px;
    text-transform: lowercase;
    margin: 4px 0 0;
}

form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 15px;
    outline: none;
    transition: border-color 0.15s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
    border-color: var(--accent-color);
}

input::placeholder {
    color: var(--text-secondary);
}

.btn {
    display: inline-block;
    padding: 14px 16px;
    border-radius: var(--radius);
    border: none;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s ease, opacity 0.15s ease;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--bg-primary);
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

.btn-primary:disabled {
    opacity: 0.75;
    cursor: progress;
}

.btn-full {
    width: 100%;
}

.auth-error {
    margin: 16px 0 0;
    padding: 10px 12px;
    color: var(--error);
    font-size: 13px;
    text-align: center;
    border: 1px solid var(--error);
    border-radius: var(--radius);
    background: transparent;
}

/* (c) footer relay indicator */
.portal-footer {
    margin-top: 24px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.relay-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #4ade80;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.4; }
}

@media (max-width: 420px) {
    .auth-box {
        padding: 28px 20px;
        border: none;
    }
}

/* ─── Multi-step UI: TOTP form + box selection ───────────────────── */
.step-prompt {
    margin: 0 0 12px;
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
}

.btn-link {
    background: transparent;
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: 12px;
    padding: 8px;
    border: 0;
    cursor: pointer;
    width: 100%;
}
.btn-link:hover { color: var(--text-primary); }

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover { background: var(--bg-tertiary); }

.box-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.box-row { text-align: left; }