/* =============================================================
   style_gpt.css  —  DentaSmart AI GPT
   Purple/violet theme to distinguish from Gemini's blue-green.
   ============================================================= */

:root {
    --white:          #ffffff;
    --soft-gray:      #f8f9fa;
    --light-gray:     #e9ecef;
    --medium-gray:    #dee2e6;
    --dark-gray:      #495057;
    --text-primary:   #212529;
    --text-secondary: #6c757d;
    --accent-1:       #7c3aed;   /* violet 600 */
    --accent-2:       #a855f7;   /* purple 500 */
    --accent-deep:    #5b21b6;   /* violet 800 */
    --accent-pink:    #ec4899;   /* for hover gradients */
    --accent-red:     #ea4335;
    --shadow-light:   0 2px 10px rgba(0,0,0,0.08);
    --shadow-medium:  0 4px 20px rgba(124,58,237,0.18);
    --shadow-hover:   0 8px 30px rgba(124,58,237,0.28);
    --radius-sm:  8px;
    --radius-md:  12px;
    --radius-lg:  20px;
}

*, *::before, *::after {
    margin: 0; padding: 0; box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background: linear-gradient(135deg, #f5f3ff 0%, #d8b4fe 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container { max-width: 900px; margin: 0 auto; padding: 20px; }

/* ── Back/switch button ─────────────────────────────────────── */
.back-home-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255,255,255,0.9);
    color: var(--accent-1);
    border: 1px solid rgba(124,58,237,0.25);
    padding: 8px 16px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(124,58,237,0.12);
    z-index: 100;
}
.back-home-btn:hover {
    background: var(--accent-1);
    color: white;
    transform: translateY(-1px);
}

/* ── Header ─────────────────────────────────────────────────── */
.header {
    text-align: center;
    padding: 40px 30px 30px;
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--light-gray);
    position: relative;
}
.logo {
    width: 80px; height: 80px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-pink));
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-medium);
}
.logo i { font-size: 40px; color: white; }
.header h1 {
    color: var(--text-primary);
    font-size: 2.5em;
    font-weight: 300;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}
.header p { color: var(--text-secondary); font-size: 14px; margin-bottom: 14px; }

.conn-status-header {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 13px; color: var(--text-secondary);
    margin-bottom: 14px;
}
.connection-dot {
    width: 10px; height: 10px; border-radius: 50%;
    background: #adb5bd;
    transition: all 0.3s;
}
.connection-dot.connected    { background: #22c55e; box-shadow: 0 0 8px rgba(34,197,94,0.5); }
.connection-dot.disconnected { background: #adb5bd; }

.prompt-editor-toggle-btn {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: white;
    border: none;
    padding: 8px 18px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(124,58,237,0.3);
    transition: all 0.2s;
}
.prompt-editor-toggle-btn:hover { transform: translateY(-1px); }

/* ── Patient bar ────────────────────────────────────────────── */
.patient-bar {
    display: flex; gap: 12px; align-items: center;
    margin-bottom: 16px;
    background: #fff;
    padding: 14px 20px;
    border-radius: 14px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    border: 1px solid var(--light-gray);
}
.patient-bar label { font-weight: 600; font-size: 15px; white-space: nowrap; }
.patient-bar input {
    flex: 1;
    padding: 10px 16px;
    border: 2px solid var(--light-gray);
    border-radius: 10px;
    font-size: 15px;
    background: var(--soft-gray);
    transition: all 0.3s;
}
.patient-bar input:focus {
    outline: none;
    border-color: var(--accent-1);
    background: white;
}
.patient-bar input:disabled { background: #ede9fe; color: var(--accent-deep); }
.patient-bar button {
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-pink));
    color: white;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    box-shadow: 0 3px 12px rgba(124,58,237,0.3);
    transition: all 0.2s;
}
.patient-bar button:hover { transform: translateY(-1px); box-shadow: 0 5px 16px rgba(124,58,237,0.4); }

/* ── Tab bar ────────────────────────────────────────────────── */
.tab-bar {
    display: flex; gap: 12px; margin-bottom: 20px;
    background: #fff; padding: 8px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border: 1px solid var(--light-gray);
}
.tab-btn {
    flex: 1;
    padding: 16px 28px;
    border: none;
    border-radius: 14px;
    background: #f0f2f5;
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    letter-spacing: 0.3px;
}
.tab-btn.active {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-pink));
    color: white;
    box-shadow: 0 4px 18px rgba(124,58,237,0.35);
}

/* ── Session start ──────────────────────────────────────────── */
.session-start-section {
    background: #fff;
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--light-gray);
    text-align: center;
}
.session-id-display {
    font-family: 'Courier New', monospace;
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 20px;
}
.session-id-display span { color: var(--accent-1); font-weight: 600; }
#startSessionBtn {
    padding: 14px 40px;
    border: none;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-pink));
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-medium);
    transition: all 0.3s;
    display: inline-flex; align-items: center; gap: 10px;
}
#startSessionBtn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
#startSessionBtn:disabled { opacity: 0.5; cursor: not-allowed; }
#startSessionBtn:focus { outline: 3px solid rgba(124,58,237,0.4); outline-offset: 2px; }

.hint {
    margin-top: 16px;
    font-size: 12px;
    color: var(--text-secondary);
}
.hint kbd {
    background: var(--soft-gray);
    border: 1px solid var(--medium-gray);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 11px;
    font-family: monospace;
}

/* ── Chat container ─────────────────────────────────────────── */
.chat-container {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--light-gray);
    height: 60vh;
    min-height: 480px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    max-width: 80%;
    padding: 12px 18px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.5;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    animation: fadeIn 0.3s ease;
    word-wrap: break-word;
}
.user-message {
    align-self: flex-end;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-pink));
    color: white;
    border-bottom-right-radius: 4px;
}
.bot-message {
    align-self: flex-start;
    background: var(--soft-gray);
    color: var(--text-primary);
    border: 1px solid var(--light-gray);
    border-bottom-left-radius: 4px;
}
.error-message {
    align-self: center;
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 13px;
}

/* ── Typing indicator ───────────────────────────────────────── */
.typing-indicator {
    display: none;
    padding: 8px 24px;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 13px;
}
.dots { display: inline-flex; gap: 4px; }
.dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent-1);
    animation: bounce 1.4s infinite;
}
.dot:nth-child(2) { animation-delay: 0.2s; }
.dot:nth-child(3) { animation-delay: 0.4s; }

/* ── Chat input ─────────────────────────────────────────────── */
.chat-input {
    display: flex;
    gap: 10px;
    padding: 16px 20px;
    border-top: 1px solid var(--light-gray);
    background: var(--soft-gray);
}
.chat-input input {
    flex: 1;
    padding: 12px 18px;
    border: 2px solid var(--light-gray);
    border-radius: 25px;
    font-size: 14px;
    background: white;
    transition: all 0.2s;
}
.chat-input input:focus {
    outline: none;
    border-color: var(--accent-1);
    box-shadow: 0 0 0 3px rgba(124,58,237,0.15);
}
.chat-input button {
    padding: 12px 24px;
    border: none;
    border-radius: 25px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-pink));
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 14px rgba(124,58,237,0.3);
}
.chat-input button:hover { transform: scale(1.05); }
.chat-input button:active { transform: scale(0.98); }

/* ── Token box ──────────────────────────────────────────────── */
.token-box {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: white;
    border: 1px solid var(--light-gray);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 12px;
    box-shadow: var(--shadow-medium);
    color: var(--text-secondary);
    min-width: 180px;
    z-index: 50;
}
.token-title {
    font-weight: 700;
    color: var(--accent-1);
    margin-bottom: 8px;
    font-size: 13px;
}
.token-section {
    border-top: 1px dashed var(--light-gray);
    padding-top: 8px;
    margin-top: 8px;
}
.token-section:first-of-type {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
}
.token-section-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.token-section span {
    font-weight: 600;
    color: var(--accent-deep);
    font-family: 'Courier New', monospace;
}

/* ── Prompt editor ──────────────────────────────────────────── */
.prompt-overlay {
    position: fixed; inset: 0;
    background: rgba(17,17,17,0.4);
    opacity: 0; visibility: hidden;
    transition: all 0.3s;
    z-index: 200;
}
.prompt-overlay.visible { opacity: 1; visibility: visible; }
.prompt-editor-panel {
    position: fixed;
    top: 0; right: -640px;
    width: 600px; max-width: 96vw;
    height: 100vh;
    background: white;
    box-shadow: -8px 0 30px rgba(0,0,0,0.15);
    transition: right 0.3s ease;
    z-index: 201;
    display: flex;
    flex-direction: column;
    padding: 24px;
}
.prompt-editor-panel.open { right: 0; }
.prompt-editor-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 16px;
}
.prompt-editor-header h3 { color: var(--accent-1); font-size: 18px; }
.prompt-editor-close-btn {
    background: none; border: none; font-size: 28px;
    color: var(--text-secondary); cursor: pointer;
}
.prompt-editor-info {
    font-size: 13px; color: var(--text-secondary);
    margin-bottom: 14px; line-height: 1.5;
}
.prompt-editor-actions-top, .prompt-editor-actions-bottom {
    display: flex; gap: 10px; align-items: center;
    margin: 10px 0;
}
.prompt-char-count { font-size: 12px; color: var(--text-secondary); margin-left: auto; font-family: monospace; }
.prompt-editor-textarea-wrap { flex: 1; display: flex; }
.prompt-textarea {
    flex: 1;
    width: 100%;
    border: 2px solid var(--light-gray);
    border-radius: 10px;
    padding: 14px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.5;
    resize: none;
}
.prompt-textarea:focus { outline: none; border-color: var(--accent-1); }
.prompt-status {
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    margin: 8px 0;
}
.prompt-status.info    { background: #ede9fe; color: var(--accent-deep); }
.prompt-status.success { background: #dcfce7; color: #166534; }
.prompt-status.error   { background: #fee2e2; color: #991b1b; }
.prompt-btn {
    padding: 9px 18px;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex; align-items: center; gap: 6px;
}
.prompt-btn-load  { background: var(--soft-gray); color: var(--text-primary); border: 1px solid var(--medium-gray); }
.prompt-btn-save  { background: linear-gradient(135deg, var(--accent-1), var(--accent-pink)); color: white; }
.prompt-btn-save.modified { box-shadow: 0 0 0 3px rgba(124,58,237,0.25); }
.prompt-btn-reset { background: white; color: var(--text-primary); border: 1px solid var(--medium-gray); }
.prompt-btn:hover:not(:disabled) { transform: translateY(-1px); }
.prompt-editor-hint {
    margin-top: 10px;
    font-size: 11px;
    color: var(--text-secondary);
    text-align: center;
}
.prompt-editor-hint kbd {
    background: var(--soft-gray);
    border: 1px solid var(--medium-gray);
    border-radius: 4px;
    padding: 1px 5px;
    font-size: 10px;
}

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
    text-align: center;
    padding: 12px;
    font-size: 11px;
    color: #adb5bd;
    letter-spacing: 0.3px;
}

/* ── Animations ─────────────────────────────────────────────── */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes bounce {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.6; }
    40%           { transform: scale(1);   opacity: 1;   }
}

/* ── Scrollbar ──────────────────────────────────────────────── */
.chat-messages::-webkit-scrollbar { width: 8px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb {
    background: var(--accent-2);
    border-radius: 4px;
    opacity: 0.4;
}