.lobby-body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
    margin: 0;
    background: linear-gradient(160deg, #2d1810 0%, #1a0f0a 50%, #0f2818 100%);
    color: #fff8f0;
}

.lobby-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem 1rem;
    padding-top: max(0.75rem, env(safe-area-inset-top));
    background: rgba(0, 0, 0, 0.35);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(6px);
}

.lobby-topbar__spacer {
    flex: 1;
}

.lobby-topbar .back-link {
    flex-shrink: 0;
    color: #ffcc80;
    text-decoration: none;
    font-size: 0.9rem;
    white-space: nowrap;
}

.lobby-topbar .back-link:hover {
    text-decoration: underline;
}

.help-btn {
    flex-shrink: 0;
    width: 2.35rem;
    height: 2.35rem;
    padding: 0;
    border-radius: 50%;
    border: 1px solid rgba(255, 183, 77, 0.5);
    background: linear-gradient(135deg, rgba(255, 143, 0, 0.2), rgba(139, 69, 19, 0.25));
    color: #ffcc80;
    font-size: 1.1rem;
    font-weight: 800;
    line-height: 1;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.help-btn:hover {
    transform: scale(1.05);
    border-color: rgba(255, 183, 77, 0.8);
    box-shadow: 0 0 12px rgba(255, 143, 0, 0.25);
}

.lobby-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    padding-top: calc(3.5rem + env(safe-area-inset-top, 0px));
}

.lobby {
    width: 100%;
    max-width: 420px;
}

.lobby-header {
    text-align: center;
    margin-bottom: 2rem;
}

.lobby-header h1 {
    margin: 0 0 0.5rem;
    font-size: 1.75rem;
}

.lobby-header p {
    margin: 0;
    color: rgba(255, 248, 240, 0.7);
    line-height: 1.5;
}

.lobby-choices {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.lobby-btn {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding: 1.25rem 1.35rem;
    border: 2px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.06);
    color: inherit;
    cursor: pointer;
    text-align: left;
    transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.lobby-btn:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 183, 77, 0.5);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.lobby-btn--host {
    background: linear-gradient(135deg, rgba(255, 143, 0, 0.18), rgba(139, 69, 19, 0.2));
}

.lobby-btn--join {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.15), rgba(46, 125, 50, 0.15));
}

.lobby-btn__icon {
    font-size: 1.75rem;
}

.lobby-btn__title {
    font-size: 1.25rem;
    font-weight: 700;
}

.lobby-btn__desc {
    font-size: 0.9rem;
    color: rgba(255, 248, 240, 0.65);
}

.join-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.join-form[hidden],
.lobby-status[hidden],
.lobby-header[hidden],
.lobby-choices[hidden] {
    display: none !important;
}

.join-form__title {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
    text-align: center;
}

.join-form__intro {
    margin: 0;
    text-align: center;
    color: rgba(255, 248, 240, 0.7);
    font-size: 0.95rem;
    line-height: 1.4;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.join-form label:not(.visually-hidden) {
    font-size: 0.9rem;
    font-weight: 600;
}

.join-form input {
    padding: 0.85rem 1rem;
    font-size: 1.5rem;
    letter-spacing: 0.35em;
    text-align: center;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.25);
    color: #fff;
}

.join-form input:focus {
    outline: none;
    border-color: #4caf50;
}

.form-error {
    margin: 0;
    color: #ff8a80;
    font-size: 0.9rem;
}

.join-form__actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.btn-primary,
.btn-secondary {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

.btn-primary {
    background: #4caf50;
    color: #fff;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.lobby-status {
    margin: 1rem 0 0;
    text-align: center;
    color: rgba(255, 248, 240, 0.7);
}

/* Help popup */
.help-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    animation: help-overlay-in 0.25s ease;
}

.help-overlay[hidden] {
    display: none !important;
}

@keyframes help-overlay-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.help-popup {
    width: 100%;
    max-width: 400px;
    max-height: min(85vh, 640px);
    overflow-y: auto;
    padding: 1.5rem 1.35rem 1.25rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 183, 77, 0.35);
    background: linear-gradient(160deg, #2d1810 0%, #1a0f0a 55%, #0f2818 100%);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
    animation: help-popup-in 0.35s cubic-bezier(0.34, 1.4, 0.64, 1);
}

@keyframes help-popup-in {
    from { transform: scale(0.92) translateY(12px); opacity: 0; }
    to   { transform: scale(1) translateY(0); opacity: 1; }
}

.help-popup h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #ffecb3, #ff8f00);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.help-popup__subtitle {
    margin: 0.25rem 0 1rem;
    font-size: 0.9rem;
    color: rgba(255, 248, 240, 0.65);
}

.help-popup__content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
    line-height: 1.5;
    color: rgba(255, 248, 240, 0.88);
}

.help-popup__content h3 {
    margin: 0 0 0.35rem;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #ffb74d;
}

.help-popup__content ul {
    margin: 0;
    padding-left: 1.15rem;
}

.help-popup__content li {
    margin-bottom: 0.35rem;
}

.help-popup__content p {
    margin: 0;
}

.help-popup__close {
    width: 100%;
}