/* ===== IMPORT FONTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #faf9f7;
    --bg-secondary: #f2f0ec;
    --bg-card: #ffffff;
    --text-primary: #1a1814;
    --text-secondary: #7a7570;
    --accent-primary: #2d2926;
    --accent-secondary: #8b7355;
    --success: #4a7c5c;
    --danger: #c0392b;
    --warning: #b8860b;
    --border: #e5e1db;
    --border-light: #f0ede8;

    --bubble-me: #2d2926;
    --bubble-other: #ede9e3;
    --text-me: #faf9f7;
    --text-other: #1a1814;
    --chat-bg: #faf9f7;

    --header-bg: #ffffff;
    --header-text: #1a1814;

    --bubble-radius: 18px;
    --input-radius: 12px;
    --button-radius: 8px;

    --font-size: 15px;
    --font-family: 'DM Sans', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-display: 'Cormorant Garamond', Georgia, serif;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    height: 100dvh;
    margin: 0;
    font-size: var(--font-size);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app-container {
    width: 100%;
    height: 100vh;
    height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(ellipse 60% 40% at 20% 20%, rgba(139,115,85,0.06) 0%, transparent 70%),
        radial-gradient(ellipse 50% 50% at 80% 80%, rgba(45,41,38,0.04) 0%, transparent 70%),
        var(--bg-primary);
}

.screen {
    display: none;
    width: 100%;
    max-width: 460px;
    padding: 24px;
    animation: fadeIn 0.4s ease;
}

.screen.active { display: block; }

#chatScreen.active {
    max-width: 100%;
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    padding: 0;
    background: var(--chat-bg);
    position: relative;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.background-image-layer {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    pointer-events: none;
    z-index: 0;
}

.background-text-overlay {
    position: absolute;
    width: 100%;
    text-align: center;
    font-weight: 300;
    opacity: 0.06;
    pointer-events: none;
    z-index: 1;
    font-size: 48px;
    font-family: var(--font-display);
    color: var(--text-primary);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.background-text-overlay.center { top: 50%; transform: translateY(-50%); }
.background-text-overlay.top { top: 20%; }
.background-text-overlay.bottom { bottom: 20%; }

/* ===== CARDS ===== */
.card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 44px 40px 40px;
    box-shadow:
        0 1px 3px rgba(0,0,0,0.04),
        0 6px 24px rgba(0,0,0,0.07),
        0 0 0 1px var(--border-light);
}

.card h1 {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 300;
    margin-bottom: 6px;
    text-align: center;
    color: var(--text-primary);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.card h2 {
    font-family: var(--font-display);
    font-size: 1.9rem;
    font-weight: 400;
    margin-bottom: 24px;
    color: var(--text-primary);
    letter-spacing: 0.04em;
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 0.72rem;
    text-align: center;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

/* ===== FORMS ===== */
.form-group { margin-bottom: 18px; }

.form-group label {
    display: block;
    margin-bottom: 7px;
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group textarea,
.form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.93rem;
    transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
    font-family: var(--font-family);
}

.form-group input:focus,
.form-group textarea:focus,
.form-control:focus {
    outline: none;
    border-color: var(--accent-secondary);
    background: var(--bg-card);
    box-shadow: 0 0 0 3px rgba(139,115,85,0.1);
}

.form-group small {
    display: block;
    margin-top: 6px;
    color: var(--warning);
    font-size: 0.78rem;
}

.color-picker {
    width: 100%;
    height: 46px;
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
}

/* ===== BUTTONS ===== */
.button-group {
    display: flex;
    gap: 10px;
    margin-top: 24px;
}

.btn {
    flex: 1;
    padding: 13px 24px;
    border: none;
    border-radius: var(--button-radius);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-family);
}

.btn-small {
    padding: 8px 14px;
    font-size: 0.74rem;
    flex: none;
    width: auto;
}

.btn-primary {
    background: var(--accent-primary);
    color: #faf9f7;
    border: 1px solid var(--accent-primary);
}

.btn-primary:hover {
    background: #1a1814;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(45,41,38,0.2);
}

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

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-secondary);
}

.btn-send {
    background: var(--accent-primary);
    color: #faf9f7;
    flex: 0 0 auto;
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-family);
}

.btn-send:hover {
    background: #1a1814;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.icon-btn {
    background: transparent;
    border: 1px solid var(--border);
    font-size: 1rem;
    cursor: pointer;
    padding: 7px 10px;
    border-radius: 8px;
    transition: all 0.2s;
    color: var(--text-secondary);
    line-height: 1;
}

.icon-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-secondary);
    color: var(--text-primary);
}

/* ===== CHAT LAYOUT ===== */
.chat-header {
    background: var(--header-bg);
    padding: 13px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-light);
    position: relative;
    z-index: 10;
    box-shadow: 0 1px 8px rgba(0,0,0,0.04);
}

.chat-header.hidden { display: none; }

.room-info h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.06em;
    margin-bottom: 1px;
    color: var(--header-text);
}

.room-id {
    font-size: 0.68rem;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.header-actions {
    display: flex;
    gap: 6px;
    align-items: center;
}

/* ===== MESSAGES ===== */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
    z-index: 2;
}

.message-bubble {
    max-width: 70%;
    padding: 11px 16px;
    border-radius: var(--bubble-radius);
    animation: messagePop 0.22s ease;
    word-wrap: break-word;
    position: relative;
}

@keyframes messagePop {
    0% { opacity: 0; transform: scale(0.95) translateY(4px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}

.message-bubble.me {
    background: var(--bubble-me);
    color: var(--text-me);
    align-self: flex-end;
    border-bottom-right-radius: 5px;
    box-shadow: 0 2px 8px rgba(45,41,38,0.14);
    opacity: 0.5;
}

.message-bubble.other {
    background: var(--bubble-other);
    color: var(--text-other);
    align-self: flex-start;
    border-bottom-left-radius: 5px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
    border: 1px solid var(--border-light);
    opacity: 0.5;
}

.message-bubble.error {
    background: rgba(192,57,43,0.07);
    color: var(--danger);
    border: 1px solid rgba(192,57,43,0.15);
}

.message-text {
    margin: 0;
    line-height: 1.55;
    font-size: 0.92rem;
}

.message-meta {
    font-size: 0.66rem;
    opacity: 0.45;
    margin-top: 5px;
    text-align: right;
    letter-spacing: 0.03em;
}

/* ===== TYPING INDICATOR ===== */
.typing-indicator {
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    margin: 0 20px 10px;
    width: fit-content;
    position: relative;
    z-index: 2;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.typing-indicator.hidden { display: none; }

.typing-dots { display: flex; gap: 4px; }

.typing-dots span {
    width: 6px;
    height: 6px;
    background: var(--accent-secondary);
    border-radius: 50%;
    animation: typingDot 1.4s infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingDot {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.3; }
    30% { transform: translateY(-5px); opacity: 1; }
}

/* ===== MESSAGE INPUT ===== */
.message-input-container {
    display: flex;
    gap: 10px;
    padding: 13px 20px;
    padding-bottom: max(13px, env(safe-area-inset-bottom, 13px));
    background: var(--bg-card);
    border-top: 1px solid var(--border-light);
    position: relative;
    z-index: 10;
    flex-shrink: 0;
}

#messageInput {
    flex: 1;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--input-radius);
    color: var(--text-primary);
    font-size: 0.92rem;
    resize: none;
    max-height: 120px;
    font-family: var(--font-family);
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

#messageInput:focus {
    outline: none;
    border-color: var(--accent-secondary);
    box-shadow: 0 0 0 3px rgba(139,115,85,0.1);
    background: var(--bg-card);
}

#messageInput::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

/* ===== SETTINGS PANEL ===== */
.settings-panel {
    position: fixed;
    top: 0;
    right: -440px;
    width: 440px;
    height: 100vh;
    background: var(--bg-card);
    box-shadow: -2px 0 32px rgba(0,0,0,0.1), -1px 0 0 var(--border);
    transition: right 0.35s cubic-bezier(0.25,0.46,0.45,0.94);
    overflow-y: auto;
    z-index: 1000;
}

.settings-panel.active { right: 0; }

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.settings-header h2 {
    margin: 0;
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--text-primary);
    letter-spacing: 0.06em;
}

.settings-content { padding: 28px; }

.settings-section {
    margin-bottom: 30px;
    padding-bottom: 26px;
    border-bottom: 1px solid var(--border-light);
}

.settings-section:last-child { border-bottom: none; }

.settings-section h3 {
    margin-bottom: 14px;
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    cursor: pointer;
}

.toggle-label input[type="checkbox"] {
    width: 42px;
    height: 22px;
    appearance: none;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 11px;
    position: relative;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
    flex-shrink: 0;
}

.toggle-label input[type="checkbox"]:checked {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.toggle-label input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: white;
    top: 2px;
    left: 2px;
    transition: left 0.2s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle-label input[type="checkbox"]:checked::before { left: 22px; }

.toggle-label span {
    color: var(--text-primary);
    font-size: 0.88rem;
}

input[type="range"] {
    width: 100%;
    height: 3px;
    background: var(--border);
    border-radius: 2px;
    outline: none;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 15px;
    height: 15px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

input[type="range"]::-moz-range-thumb {
    width: 15px;
    height: 15px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* ===== MUSIC CONTROLS ===== */
.music-controls {
    margin-top: 12px;
    padding: 14px;
    background: var(--bg-secondary);
    border-radius: 10px;
    border: 1px solid var(--border-light);
}

.music-controls.hidden { display: none; }

.music-info {
    margin-bottom: 10px;
    color: var(--text-secondary);
    font-size: 0.84rem;
}

.music-controls .button-group { margin-top: 10px; }

/* ===== MODALS ===== */
.modal {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(26,24,20,0.45);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal.hidden { display: none; }

.modal-content {
    background: var(--bg-card);
    padding: 38px;
    border-radius: 20px;
    max-width: 480px;
    width: 90%;
    box-shadow: 0 24px 64px rgba(0,0,0,0.15), 0 0 0 1px var(--border);
}

.modal-content h3 {
    margin-bottom: 20px;
    font-family: var(--font-display);
    font-size: 1.7rem;
    font-weight: 400;
    color: var(--text-primary);
    letter-spacing: 0.04em;
}

.share-link-container {
    display: flex;
    gap: 10px;
    margin: 20px 0;
}

#shareLinkInput {
    flex: 1;
    padding: 11px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.84rem;
    font-family: var(--font-family);
}

/* ===== STATUS MESSAGES ===== */
.status-message {
    margin-top: 14px;
    padding: 10px 14px;
    border-radius: 8px;
    text-align: center;
    font-size: 0.8rem;
    letter-spacing: 0.03em;
}

.status-message.error {
    background: rgba(192,57,43,0.07);
    color: var(--danger);
    border: 1px solid rgba(192,57,43,0.15);
}

.status-message.success {
    background: rgba(74,124,92,0.08);
    color: var(--success);
    border: 1px solid rgba(74,124,92,0.18);
}

/* ===== LOADING ===== */
.loading-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(250,249,247,0.96);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.loading-overlay.hidden { display: none; }

.spinner {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

#loadingText {
    margin-top: 18px;
    color: var(--text-secondary);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

/* ===== SECURITY NOTE ===== */
.security-note {
    margin-top: 24px;
    padding: 13px 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border-left: 2px solid var(--accent-secondary);
    font-size: 0.76rem;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

.warning {
    color: var(--warning);
    margin-top: 12px;
    text-align: center;
    font-size: 0.8rem;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-secondary); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .message-bubble { max-width: 85%; }
    .card { padding: 28px 22px; }
    .settings-panel { width: 100%; right: -100%; }
}

/* ===== MOBILE PHONE FIX ===== */
@media (max-width: 480px) {
    /* Ensure the full layout fills the screen properly */
    html, body {
        height: 100%;
        height: -webkit-fill-available;
    }

    .app-container {
        height: 100%;
        height: -webkit-fill-available;
    }

    #chatScreen.active {
        height: 100%;
        height: -webkit-fill-available;
        /* Prevent the keyboard from collapsing the layout */
        min-height: 0;
    }

    /* Messages area takes all available space */
    .messages-container {
        flex: 1 1 0;
        min-height: 0;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Input bar always visible, never scrolled off */
    .message-input-container {
        flex-shrink: 0;
        position: sticky;
        bottom: 0;
        padding: 10px 12px;
        padding-bottom: max(10px, env(safe-area-inset-bottom, 10px));
        z-index: 100;
    }

    /* Smaller send button on mobile */
    .btn-send {
        padding: 10px 14px;
        font-size: 0.72rem;
    }

    /* Remove the huge side padding that hides messages behind robots */
    #messagesContainer {
        padding-left: 10px !important;
        padding-right: 10px !important;
    }

    /* Make message bubbles wider since there are no side robots */
    .message-bubble {
        max-width: 88% !important;
    }

    /* Header compact on mobile */
    .chat-header {
        padding: 10px 14px;
    }

    .room-info h3 {
        font-size: 0.95rem;
    }

    /* Robot stage: scale down robots so they don't get cut */
    #robotStage {
        /* Robots draw in canvas coordinates — scale the whole stage down */
        transform-origin: top left;
    }

    /* Robot labels: reposition for narrow screens */
    .robot-label {
        font-size: 0.58rem;
        bottom: 75px;
    }

    #labelLeft  { left: 16%; }
    #labelRight { left: 84%; }

    /* Status dots */
    .robot-status {
        bottom: 90px;
        width: 6px;
        height: 6px;
    }

    #statusLeft  { left: calc(16% - 24px); }
    #statusRight { left: calc(84% + 18px); }

    /* Speech bubbles */
    .robot-speech {
        max-width: 130px;
        font-size: 0.72rem;
        padding: 6px 10px;
        bottom: 160px;
    }

    #speechLeft  { left: 16%; }
    #speechRight { left: 84%; }

    /* Thinking dots */
    #thinkLeft  { left: calc(16% - 14px); }
    #thinkRight { left: calc(84% - 14px); }
}