/* ═══════════════════════════════════════════════════════
   VARIABLES & RESET
═══════════════════════════════════════════════════════ */
:root {
    --bg: #0f172a;
    --surface: rgba(15, 23, 42, 0.82);
    --surface-border: rgba(148, 163, 184, 0.22);
    --text: #f8fafc;
    --muted: #cbd5e1;
    --accent: #f59e0b;
    --accent-hover: #fbbf24;
    --error: #f87171;
    --radius: 18px;
}

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

html, body {
    min-height: 100%;
}

body {
    font-family: "Segoe UI", "Trebuchet MS", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top, rgba(245, 158, 11, 0.18), transparent 34%),
        linear-gradient(160deg, #020617 0%, #0f172a 55%, #111827 100%);
    line-height: 1.5;
}

/* ═══════════════════════════════════════════════════════
   LINKS
═══════════════════════════════════════════════════════ */
a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.15s;
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ═══════════════════════════════════════════════════════
   CENTERING SHELL (auth / landing)
═══════════════════════════════════════════════════════ */
.page-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

/* ═══════════════════════════════════════════════════════
   CARD
═══════════════════════════════════════════════════════ */
.card {
    width: min(100%, 440px);
    background: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius);
    box-shadow: 0 28px 80px rgba(2, 6, 23, 0.45);
    backdrop-filter: blur(14px);
}

/* ═══════════════════════════════════════════════════════
   TYPOGRAPHY
═══════════════════════════════════════════════════════ */
.brand {
    font-size: 0.78rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 1.25rem;
}

h1 {
    font-size: 2rem;
    line-height: 1.1;
    margin-bottom: 1.25rem;
}

.muted {
    font-size: 0.96rem;
    color: var(--muted);
}

/* ═══════════════════════════════════════════════════════
   FORM ELEMENTS
═══════════════════════════════════════════════════════ */
.field {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.45rem;
    font-size: 0.92rem;
}

input,
textarea,
select {
    width: 100%;
    border: 1px solid rgba(148, 163, 184, 0.35);
    border-radius: 12px;
    background: rgba(15, 23, 42, 0.88);
    color: var(--text);
    padding: 0.85rem 0.95rem;
    font: inherit;
    transition: border-color 0.15s;
}

textarea {
    min-height: 14rem;
    line-height: 1.5;
    resize: vertical;
    overflow: auto;
}

input:focus,
textarea:focus,
select:focus {
    outline: 2px solid rgba(245, 158, 11, 0.45);
    outline-offset: 2px;
    border-color: transparent;
}

input::placeholder {
    color: rgba(203, 213, 225, 0.4);
}

/* ═══════════════════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════════════════ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    margin-top: 0.5rem;
    padding: 0.9rem 1rem;
    border: 1.5px solid transparent;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent), #fb7185);
    color: #0f172a;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, transform 0.1s;
    -webkit-appearance: none;
    appearance: none;
}

.btn:hover {
    background: linear-gradient(135deg, var(--accent-hover), #f472b6);
    color: #0f172a;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.btn-ghost {
    background: transparent;
    border-color: rgba(148, 163, 184, 0.4);
    color: var(--muted);
}

.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(245, 158, 11, 0.08);
    text-decoration: none;
}

/* ═══════════════════════════════════════════════════════
   HELPERS
═══════════════════════════════════════════════════════ */
.error {
    color: var(--error);
    font-weight: 600;
}

.help {
    margin-top: 0.45rem;
    font-size: 0.85rem;
    color: var(--muted);
}

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

/* ═══════════════════════════════════════════════════════
   LANDING PAGE
═══════════════════════════════════════════════════════ */
.landing-card {
    padding: 44px 36px;
    text-align: center;
    width: min(100%, 480px);
}

.landing-card h1 {
    font-size: 3.2rem;
    line-height: 1;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent) 20%, #fb7185 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.tagline {
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.access-title {
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 0.85rem;
}

.cta-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.cta-group .btn {
    margin-top: 0;
}

.lang-switch {
    font-size: 0.85rem;
    margin-top: 1rem;
}

.lang-switch a {
    color: var(--muted);
}

.lang-switch a:hover {
    color: var(--text);
    text-decoration: none;
}

/* ═══════════════════════════════════════════════════════
   AUTH PAGES (login / signup)
═══════════════════════════════════════════════════════ */
.auth-card {
    padding: 36px 32px;
}

.auth-card h1 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.auth-card [role="alert"] {
    color: var(--error);
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.auth-card form .field {
    margin-bottom: 1rem;
}

.auth-card form .btn {
    margin-top: 1.25rem;
}

.auth-footer {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--surface-border);
}

.auth-footer h2 {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--muted);
    margin-bottom: 0.4rem;
}

/* ═══════════════════════════════════════════════════════
   HUB PAGE
═══════════════════════════════════════════════════════ */
.hub-page {
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background:
        radial-gradient(circle at top left, rgba(245, 158, 11, 0.07), transparent 40%),
        #070d1a;
}

.hub-page main {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.hub-shell {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    padding: 0;
}

#app {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    padding: 12px 16px 16px;
    gap: 10px;
}

/* — Connection status — */
#gameArea {
    flex-shrink: 0;
}

#gameArea h2 {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

#connectionStatus {
    font-size: 0.75rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
    padding-bottom: 8px;
    border-bottom: 1px solid var(--surface-border);
}

/* — History — */
#historyArea {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

#historyArea h2 {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

#history {
    flex: 1;
    min-height: 0;
    width: 100%;
    resize: none;
    border: 1px solid var(--surface-border);
    border-radius: 12px;
    background: rgba(5, 10, 22, 0.75);
    color: #94a3b8;
    padding: 12px 14px;
    font-family: "Cascadia Code", "Fira Code", "Consolas", "Courier New", monospace;
    font-size: 0.88rem;
    line-height: 1.65;
    overflow-y: auto;
    min-height: unset;
}

#history:focus {
    outline: 2px solid rgba(245, 158, 11, 0.25);
    outline-offset: 1px;
    border-color: transparent;
}

/* — Actions — */
#actionsArea {
    flex-shrink: 0;
}

#actionsArea h2 {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

#actionsMenu {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

#actionsMenu:empty {
    display: none;
}

#actionsMenu button {
    padding: 0.5rem 1.1rem;
    border: 1px solid var(--surface-border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text);
    font: inherit;
    font-size: 0.88rem;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s, color 0.15s;
    backdrop-filter: blur(8px);
}

#actionsMenu button:hover {
    border-color: var(--accent);
    background: rgba(245, 158, 11, 0.12);
    color: var(--accent);
}

#actionsMenu button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

#actionsMenu button:active {
    transform: scale(0.97);
}

/* — Prompt input — */
#promptArea {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

#promptArea label {
    flex-shrink: 0;
    font-size: 0.88rem;
    color: var(--muted);
    margin-bottom: 0;
}

#promptArea input {
    flex: 1;
    min-width: 0;
    min-height: unset;
    border-radius: 999px;
    padding: 0.55rem 1rem;
}

#promptArea button {
    flex-shrink: 0;
    padding: 0.55rem 1.25rem;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent), #fb7185);
    color: #0f172a;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s;
}

#promptArea button:hover {
    background: linear-gradient(135deg, var(--accent-hover), #f472b6);
}

/* — Multi-field form — */
#formSection {
    flex-shrink: 0;
    border: 1px solid var(--surface-border);
    border-radius: var(--radius);
    background: var(--surface);
    backdrop-filter: blur(8px);
    padding: 14px 16px;
    max-height: 60vh;
    overflow-y: auto;
}

#formSection h2 {
    font-size: 0.95rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.form-field {
    margin-bottom: 1rem;
}

.form-field:last-child {
    margin-bottom: 0;
}

#formArea {
    display: flex;
    flex-direction: column;
}

#formSubmitBtn,
#formCancelBtn {
    flex-shrink: 0;
    padding: 0.6rem 1.25rem;
    border-radius: 999px;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    margin-top: 0.5rem;
    margin-right: 8px;
}

#formSubmitBtn {
    border: 0;
    background: linear-gradient(135deg, var(--accent), #fb7185);
    color: #0f172a;
    transition: background 0.2s;
}

#formSubmitBtn:hover {
    background: linear-gradient(135deg, var(--accent-hover), #f472b6);
}

#formCancelBtn {
    border: 1.5px solid rgba(148, 163, 184, 0.4);
    background: transparent;
    color: var(--muted);
    transition: border-color 0.15s, color 0.15s, background 0.15s;
}

#formCancelBtn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(245, 158, 11, 0.08);
}

/* — Chat input — */
#chatArea {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    padding-top: 8px;
    border-top: 1px solid var(--surface-border);
}

#chatArea label {
    flex-shrink: 0;
    font-size: 0.88rem;
    color: var(--muted);
    white-space: nowrap;
    margin-bottom: 0;
}

#chatArea input {
    flex: 1;
    min-width: 0;
    min-height: unset;
    border-radius: 999px;
    padding: 0.55rem 1rem;
}

#chatArea button {
    flex-shrink: 0;
    padding: 0.55rem 1.25rem;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent), #fb7185);
    color: #0f172a;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s;
}

#chatArea button:hover {
    background: linear-gradient(135deg, var(--accent-hover), #f472b6);
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════ */
@media (max-width: 600px) {
    .auth-card {
        padding: 28px 20px;
    }

    h1 {
        font-size: 1.7rem;
    }

    .auth-card h1 {
        font-size: 1.55rem;
    }

    .landing-card {
        padding: 32px 20px;
    }

    .landing-card h1 {
        font-size: 2.4rem;
    }

    #app {
        padding: 8px 10px 12px;
        gap: 8px;
    }

    #actionsMenu button {
        font-size: 0.83rem;
        padding: 0.45rem 0.9rem;
    }

    #promptArea {
        flex-wrap: wrap;
    }

    #promptArea label {
        width: 100%;
        margin-bottom: 2px;
    }
}