:root {
    --void: #07070a;
    --abyss: #0c0c14;
    --deep: #12121f;
    --surface: #1a1a2e;
    --elevated: #232338;
    --border: #2a2a45;
    --border-light: #3a3a5a;
    --muted: #6b6b8a;
    --text: #a0a0b8;
    --light: #c8c8dc;
    --white: #e8e8f0;
    --pure: #ffffff;
    --amber: #c9a96e;
    --amber-glow: rgba(201, 169, 110, 0.15);
    --amber-soft: rgba(201, 169, 110, 0.08);
    --crimson: #8b4557;
    --crimson-glow: rgba(139, 69, 85, 0.2);
    --sage: #5a7a6a;
    --danger: #e85050;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Space Grotesk', sans-serif;
    background: var(--void);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}
::selection {
    background: var(--amber-glow);
    color: var(--amber);
}

/* Noise overlay */
.noise {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.02;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Scrollbar */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--void); }
::-webkit-scrollbar-thumb { background: var(--surface); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--border); }

/* Header */
.guest-header {
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: var(--abyss);
}
.guest-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}
.guest-header-logo {
    font-family: 'Cormorant Garamond', serif;
    font-size: 20px;
    color: var(--white);
    text-decoration: none;
}
.guest-header-logo span { color: var(--amber); }
.trial-badge {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 20px;
    background: var(--amber-glow);
    color: var(--amber);
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.guest-header-right { display: flex; gap: 12px; align-items: center; }
.counter {
    font-size: 13px;
    color: var(--muted);
}
.counter strong { color: var(--amber); }
.btn-signup {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    padding: 8px 18px;
    border: none;
    background: var(--amber);
    color: var(--void);
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
}
.btn-signup:hover { box-shadow: 0 5px 25px rgba(201, 169, 110, 0.3); }
.btn-tg {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    padding: 8px 18px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--muted);
    font-weight: 500;
    letter-spacing: 0.05em;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
}
.btn-tg:hover { border-color: var(--amber); color: var(--amber); }

/* Chat area */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 780px;
    width: 100%;
    margin: 0 auto;
}
.messages-area {
    flex: 1;
    overflow-y: auto;
    padding: 24px 20px;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Input area */
.input-area {
    padding: 14px 18px;
    border-top: 1px solid var(--border);
    background: var(--void);
    flex-shrink: 0;
}
.input-wrapper {
    display: flex;
    gap: 8px;
    align-items: flex-end;
    max-width: 780px;
    margin: 0 auto;
}
.input-wrapper textarea {
    flex: 1;
    resize: none;
    background: var(--deep);
    border: 1px solid var(--border);
    padding: 12px 16px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px;
    color: var(--white);
    outline: none;
    min-height: 44px;
    max-height: 120px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.input-wrapper textarea:focus {
    border-color: var(--amber);
    box-shadow: 0 0 20px var(--amber-soft);
}
.input-wrapper textarea::placeholder {
    color: var(--muted);
    opacity: 0.5;
}
.btn-send {
    background: var(--amber);
    color: var(--void);
    border: none;
    padding: 0 20px;
    height: 44px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    flex-shrink: 0;
}
.btn-send:hover { box-shadow: 0 5px 25px rgba(201, 169, 110, 0.3); }
.btn-send:disabled { opacity: 0.3; cursor: not-allowed; box-shadow: none; }

/* Limit reached overlay */
.limit-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(7,7,10,0.92);
    z-index: 100;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}
.limit-overlay.active { display: flex; }
.limit-card {
    background: var(--abyss);
    border: 1px solid var(--border);
    padding: 40px;
    max-width: 420px;
    width: 90%;
    text-align: center;
}
.limit-card h2 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 28px;
    font-weight: 400;
    margin-bottom: 12px;
    color: var(--white);
}
.limit-card p {
    color: var(--muted);
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 24px;
}
.limit-card .btn-signup {
    display: inline-block;
    font-size: 16px;
    padding: 14px 36px;
    margin-bottom: 12px;
}
.limit-card .btn-secondary {
    display: block;
    margin: 0 auto;
    background: none;
    border: 1px solid var(--border);
    color: var(--muted);
    padding: 10px 24px;
    font-size: 13px;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.05em;
}
.limit-card .btn-secondary:hover { border-color: var(--light); color: var(--light); }

/* Welcome state */
.welcome-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    padding: 40px 20px;
    text-align: center;
}
.welcome-state h1 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 32px;
    font-weight: 400;
    margin-bottom: 12px;
    color: var(--white);
}
.welcome-state p {
    color: var(--muted);
    font-size: 15px;
    max-width: 400px;
    line-height: 1.6;
    margin-bottom: 8px;
}
.welcome-state .trial-info {
    margin-top: 16px;
    font-size: 13px;
    color: var(--muted);
    opacity: 0.7;
}

/* Suggestion chips */
.suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 24px;
    max-width: 480px;
}
.suggestion-chip {
    background: var(--deep);
    border: 1px solid var(--border);
    color: var(--light);
    padding: 8px 16px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Space Grotesk', sans-serif;
    line-height: 1.4;
    max-width: 100%;
}
.suggestion-chip:hover {
    border-color: var(--amber);
    color: var(--amber);
    background: var(--amber-soft);
}

/* Error message */
.error-toast {
    display: none;
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--danger);
    color: #fff;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    z-index: 200;
    animation: fadeIn 0.3s ease;
}
.error-toast.active { display: block; }

@media (max-width: 640px) {
    .guest-header { padding: 12px 16px; flex-wrap: wrap; gap: 8px; }
    .guest-header-logo { font-size: 17px; }
    .guest-header-right { gap: 8px; }
    .counter { font-size: 11px; }
    .btn-signup { font-size: 12px; padding: 6px 14px; }
    .btn-tg { font-size: 12px; padding: 6px 14px; }
    .messages-area { padding: 16px 12px; }
    .message { max-width: 92%; font-size: 14px; padding: 12px 14px; }
    .input-area { padding: 12px 12px 20px; }
    .welcome-state h1 { font-size: 26px; }
    .limit-card { padding: 28px 24px; }
    .limit-card h2 { font-size: 24px; }
}