@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@300;400;500;700&display=swap');

:root {
    /* Dark Mode variables (Default) */
    --bg-color: #050505;
    --card-bg: rgba(18, 18, 18, 0.75);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.2);
    --text-primary: #f5f5f5;
    --text-secondary: #a0a0a0;
    --text-muted: #606060;
    --accent-color: #ffffff;
    --accent-bg: #1f1f1f;
    --accent-glow: rgba(255, 255, 255, 0.1);
    --msg-user-bg: rgba(255, 255, 255, 0.06);
    --msg-ai-bg: transparent;
    --status-online: #00ff66;
    --status-warning: #ffb700;
    --status-offline: #ff3b30;
    --scrollbar-thumb: #333333;
}

[data-theme="light"] {
    /* Light Mode variables */
    --bg-color: #fafafa;
    --card-bg: rgba(255, 255, 255, 0.8);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.2);
    --text-primary: #111111;
    --text-secondary: #555555;
    --text-muted: #999999;
    --accent-color: #000000;
    --accent-bg: #eaeaea;
    --accent-glow: rgba(0, 0, 0, 0.05);
    --msg-user-bg: rgba(0, 0, 0, 0.04);
    --msg-ai-bg: transparent;
    --scrollbar-thumb: #cccccc;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100dvh;
    height: 100dvh;
    overflow: hidden;
    position: relative;
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* Canvas Background */
#canvas-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: all; /* Required for mouse interaction */
}

/* Main Container Layout */
.app-container {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    height: 100dvh;
    width: 100%;
    backdrop-filter: blur(1px);
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    background: rgba(var(--bg-color), 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: border-color 0.4s ease;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-text {
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    font-size: 1.4rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--status-warning);
    box-shadow: 0 0 8px var(--status-warning);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.status-dot.online {
    background-color: var(--status-online);
    box-shadow: 0 0 8px var(--status-online);
}

.status-dot.offline {
    background-color: var(--status-offline);
    box-shadow: 0 0 8px var(--status-offline);
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

.btn-icon {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-icon:hover {
    border-color: var(--border-hover);
    background-color: var(--accent-glow);
    transform: scale(1.05);
}

.btn-icon svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Chat Main Area */
.chat-wrapper {
    flex: 1;
    display: flex;
    justify-content: center;
    overflow: hidden;
    padding: 1.5rem 1rem 0 1rem;
    position: relative;
}

.chat-container {
    width: 100%;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 16px 16px 0 0;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.3);
    transition: background-color 0.4s ease, border-color 0.4s ease;
}

/* Welcome Screen */
.welcome-screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    animation: fadeIn 0.8s ease;
}

.welcome-logo {
    font-family: 'Outfit', sans-serif;
    font-size: 3rem;
    font-weight: 300;
    letter-spacing: 0.3em;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.welcome-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    max-width: 420px;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.quick-prompts {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    width: 100%;
    max-width: 480px;
}

@media (min-width: 480px) {
    .quick-prompts {
        grid-template-columns: 1fr 1fr;
    }
}

.prompt-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 10px;
    cursor: pointer;
    text-align: left;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.prompt-card:hover {
    border-color: var(--border-hover);
    background: var(--msg-user-bg);
}

.prompt-card h4 {
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.prompt-card p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Messages History Area */
.messages-history {
    flex: 1;
    overflow-y: auto;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.messages-history::-webkit-scrollbar {
    width: 6px;
}

.messages-history::-webkit-scrollbar-track {
    background: transparent;
}

.messages-history::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 3px;
}

/* Message Item */
.message {
    display: flex;
    gap: 1rem;
    max-width: 85%;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.message.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message.ai {
    align-self: flex-start;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.message.user .avatar {
    background-color: var(--accent-color);
    color: var(--bg-color);
    border-color: var(--accent-color);
}

.message.ai .avatar {
    background-color: var(--accent-bg);
    color: var(--text-primary);
}

.message-bubble {
    padding: 0.85rem 1.2rem;
    border-radius: 14px;
    line-height: 1.6;
    font-size: 0.95rem;
    word-break: break-word;
}

.message.user .message-bubble {
    background-color: var(--msg-user-bg);
    border: 1px solid var(--border-color);
    border-top-right-radius: 2px;
}

.message.ai .message-bubble {
    background-color: var(--msg-ai-bg);
    border: 1px solid transparent;
    border-top-left-radius: 2px;
}

/* Message Formatting */
.message-bubble p {
    margin-bottom: 0.75rem;
}

.message-bubble p:last-child {
    margin-bottom: 0;
}

.message-bubble strong {
    font-weight: 600;
    color: var(--text-primary);
}

.message-bubble ul, .message-bubble ol {
    margin-left: 1.5rem;
    margin-bottom: 0.75rem;
}

.message-bubble li {
    margin-bottom: 0.25rem;
}

.message-bubble blockquote {
    border-left: 2px solid var(--text-muted);
    padding-left: 0.75rem;
    margin: 0.75rem 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Disclaimer class specifically for medical warnings */
.med-disclaimer {
    border-top: 1px solid var(--border-color);
    margin-top: 1rem;
    padding-top: 0.75rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
    font-style: italic;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    align-items: center;
    padding: 0.5rem 0.2rem;
}

.typing-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--text-secondary);
    animation: pulse 1.4s infinite ease-in-out both;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

/* Input Panel Form */
.input-panel {
    padding: 1rem 1.5rem 1.5rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: rgba(var(--bg-color), 0.2);
    transition: border-color 0.4s ease;
}

.input-container {
    position: relative;
    display: flex;
    align-items: flex-end;
    gap: 0.75rem;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.01);
    border-radius: 12px;
    padding: 0.5rem 0.75rem;
    transition: border-color 0.3s ease;
}

.input-container:focus-within {
    border-color: var(--border-hover);
}

.chat-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 0.95rem;
    resize: none;
    max-height: 150px;
    height: 24px;
    line-height: 1.5;
    padding: 0.15rem 0.5rem;
}

.chat-input::placeholder {
    color: var(--text-muted);
}

.btn-send {
    background: var(--text-primary);
    color: var(--bg-color);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.btn-send:hover {
    transform: scale(1.05);
    filter: invert(0.1);
}

.btn-send:disabled {
    background: var(--border-color);
    color: var(--text-muted);
    cursor: not-allowed;
    transform: none;
    filter: none;
}

.btn-send svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

.app-disclaimer {
    text-align: center;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
}

/* Settings Drawer */
.settings-drawer {
    position: fixed;
    top: 0;
    right: -420px;
    width: 100%;
    max-width: 420px;
    height: 100%;
    background: rgba(10, 10, 10, 0.95);
    border-left: 1px solid var(--border-color);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    z-index: 10;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    visibility: hidden;
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.4s ease;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
    overflow-y: auto;
}

[data-theme="light"] .settings-drawer {
    background: rgba(250, 250, 250, 0.95);
}

.settings-drawer.open {
    right: 0;
    visibility: visible;
}

.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.drawer-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input, .form-group select, .form-group textarea {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 0.75rem;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s ease;
}

[data-theme="light"] .form-group input, 
[data-theme="light"] .form-group select, 
[data-theme="light"] .form-group textarea {
    background: rgba(0, 0, 0, 0.02);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--border-hover);
}

.form-group select {
    cursor: pointer;
}

.form-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.form-note.warning {
    color: var(--status-warning);
    border: 1px solid rgba(255, 183, 0, 0.2);
    padding: 0.5rem;
    border-radius: 6px;
    background: rgba(255, 183, 0, 0.03);
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-color);
    border: none;
    padding: 0.75rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.btn-primary:hover {
    filter: invert(0.1);
}

/* Settings Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    z-index: 9;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.overlay.open {
    opacity: 1;
    pointer-events: all;
    visibility: visible;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.4;
    }
    50% {
        transform: scale(1.2);
        opacity: 1;
    }
}

.message-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 100%;
}

/* Search Widget Style */
.search-widget {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.6rem 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    animation: fadeIn 0.4s ease;
}

[data-theme="light"] .search-widget {
    background: rgba(0, 0, 0, 0.02);
}

.search-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.search-icon {
    width: 14px;
    height: 14px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.search-query-text {
    color: var(--text-primary);
}

.search-sources {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    border-top: 1px solid var(--border-color);
    padding-top: 0.4rem;
    animation: fadeIn 0.3s ease;
}

.source-tag {
    background: var(--msg-user-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.2rem 0.4rem;
    font-size: 0.72rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.source-tag:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background: var(--accent-glow);
}

/* Thinking Widget Style */
.thinking-widget {
    background: rgba(255, 255, 255, 0.01);
    border: 1px dashed var(--border-color);
    border-radius: 10px;
    padding: 0.6rem 0.8rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    animation: fadeIn 0.4s ease;
}

.thinking-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.thinking-spinner {
    width: 12px;
    height: 12px;
    border: 1.5px solid var(--border-color);
    border-top-color: var(--text-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

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

.thinking-steps {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding-left: 0.75rem;
    border-left: 1px solid var(--border-color);
}

.thinking-step {
    animation: slideUp 0.3s ease forwards;
    opacity: 0;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.thinking-step.active {
    color: var(--text-secondary);
}

.thinking-step.done {
    color: var(--text-muted);
}

/* Mobile responsive adjustments */
@media (max-width: 600px) {
    header {
        padding: 0.85rem 1rem;
    }
    
    .logo-text {
        font-size: 1.1rem;
        letter-spacing: 0.15em;
    }

    .status-indicator {
        font-size: 0.7rem;
    }

    .btn-icon {
        width: 36px;
        height: 36px;
    }

    .chat-wrapper {
        padding: 0;
    }

    .chat-container {
        border: none;
        border-radius: 0;
        box-shadow: none;
    }

    .welcome-screen {
        padding: 1.5rem 1rem;
    }

    .welcome-logo {
        font-size: 2.2rem;
        margin-bottom: 0.25rem;
    }

    .welcome-subtitle {
        font-size: 0.8rem;
        margin-bottom: 1.5rem;
    }

    .quick-prompts {
        gap: 0.5rem;
    }

    .prompt-card {
        padding: 0.75rem;
    }

    .prompt-card h4 {
        font-size: 0.8rem;
    }

    .prompt-card p {
        font-size: 0.7rem;
    }

    .messages-history {
        padding: 1.25rem 0.85rem;
        gap: 1rem;
    }

    .message {
        max-width: 92%;
        gap: 0.6rem;
    }

    .avatar {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
    }

    .message-bubble {
        padding: 0.7rem 0.95rem;
        font-size: 0.9rem;
        border-radius: 12px;
    }

    .input-panel {
        padding: 0.75rem 1rem 1rem 1rem;
        background: rgba(var(--bg-color), 0.8);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }

    .input-container {
        padding: 0.4rem 0.6rem;
        border-radius: 10px;
        gap: 0.5rem;
    }

    /* Force 16px font size on all input fields on mobile to prevent iOS default zooming behavior */
    .chat-input,
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px !important;
    }

    .chat-input {
        padding: 0.15rem 0.25rem;
    }

    .btn-send {
        width: 30px;
        height: 30px;
        border-radius: 6px;
    }

    .settings-drawer {
        width: 100%;
        max-width: 100%;
        right: -100%;
        padding: 1.5rem;
        border-left: none;
        box-shadow: none;
    }
    
    .settings-drawer.open {
        right: 0;
    }
}

/* Registration & Profile & Critical Alerts Styles */
.register-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(8, 8, 8, 0.88);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(35px);
    -webkit-backdrop-filter: blur(35px);
    transition: opacity 0.4s ease;
}

[data-theme="light"] .register-overlay {
    background: rgba(240, 240, 240, 0.88);
}

.register-card {
    background: rgba(18, 18, 18, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.08);
    width: 90%;
    max-width: 440px;
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-sizing: border-box;
}

[data-theme="light"] .register-card {
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.register-progress-container {
    position: relative;
    margin-bottom: 2rem;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.register-progress-bar {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--border-color);
    transform: translateY(-50%);
    z-index: 1;
}

.register-progress-steps {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    width: 80px;
}

.progress-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.progress-dot.active {
    background: var(--text-primary);
    border-color: var(--text-primary);
    box-shadow: 0 0 10px var(--text-primary);
}

.register-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 500;
    text-align: center;
    margin-bottom: 0.5rem;
    letter-spacing: 0.03em;
    color: var(--text-primary);
}

.register-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.5;
    margin-bottom: 2.2rem;
}

/* Hide Spinners in Number Inputs */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
input[type="number"] {
    -moz-appearance: textfield;
}

/* Premium Modern Form Inputs & Selects */
.register-card .form-group {
    margin-bottom: 1.25rem;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.register-card .form-group label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: color 0.25s ease;
}

.register-card .form-group input,
.register-card .form-group select {
    background: rgba(255, 255, 255, 0.03);
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    padding: 0.8rem 1rem;
    font-size: 0.92rem;
    width: 100%;
    outline: none;
    box-sizing: border-box;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] .register-card .form-group input,
[data-theme="light"] .register-card .form-group select {
    background: rgba(0, 0, 0, 0.02);
}

.register-card .form-group input::placeholder {
    color: var(--text-secondary);
    opacity: 0.5;
}

/* Hover & Focus state for inputs */
.register-card .form-group input:hover,
.register-card .form-group select:hover {
    border-color: var(--border-hover);
}

.register-card .form-group input:focus,
.register-card .form-group select:focus {
    border-color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 0 1px var(--text-primary), 0 8px 24px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .register-card .form-group input:focus,
[data-theme="light"] .register-card .form-group select:focus {
    background: rgba(0, 0, 0, 0.04);
}

.register-card .form-group:focus-within label {
    color: var(--text-primary);
}

/* Custom dropdown chevron for premium select */
.register-card select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.1rem;
    padding-right: 2.5rem !important;
}

[data-theme="light"] .register-card select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23333333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

/* Styling options inside select */
.register-card select option {
    background: #0f0f0f;
    color: #ffffff;
    padding: 10px;
}

[data-theme="light"] .register-card select option {
    background: #ffffff;
    color: #1a1a1a;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.75rem;
}

/* Premium Buttons */
.register-card .btn-primary {
    background: var(--text-primary);
    color: var(--bg-color);
    border: 1.5px solid var(--text-primary);
    padding: 0.85rem 1.25rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.88rem;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.register-card .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    filter: brightness(1.15);
}

.register-card .btn-primary:active {
    transform: translateY(0);
}

.register-card .btn-secondary {
    background: transparent;
    border: 1.5px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.85rem 1.25rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.register-card .btn-secondary:hover {
    border-color: var(--text-primary);
    background: var(--accent-glow);
    transform: translateY(-2px);
}

.register-card .btn-secondary:active {
    transform: translateY(0);
}

.drawer-section {
    border-top: 1px solid var(--border-color);
    padding-top: 1.2rem;
    margin-top: 1.2rem;
}

.section-title {
    font-family: 'Outfit', sans-serif;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
    letter-spacing: 0.05em;
}

.profile-account-info {
    display: flex;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.8rem;
}
[data-theme="light"] .profile-account-info {
    background: rgba(0, 0, 0, 0.02);
}

.profile-summary {
    margin-bottom: 1.25rem;
}

.bmi-dashboard-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}
[data-theme="light"] .bmi-dashboard-card {
    background: rgba(0, 0, 0, 0.02);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}
.bmi-value-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.8rem;
}
.bmi-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 0.25rem;
}
.bmi-score {
    font-size: 3.2rem;
    font-weight: 300;
    line-height: 1.1;
    font-family: 'Outfit', sans-serif;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}
.bmi-badge {
    display: inline-block;
    padding: 0.3rem 0.9rem;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.bmi-explanation-text {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.55;
    text-align: center;
}

/* Critical warning banner */
.critical-alert-box {
    background: rgba(255, 59, 48, 0.06) !important;
    border: 1.5px solid #ff3b30 !important;
    border-radius: 12px;
    padding: 0.9rem;
    margin: 0.8rem 0;
    color: var(--text-primary);
    animation: pulseBorder 2.5s infinite ease-in-out;
}

.critical-alert-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #ff3b30;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
}

.critical-alert-body {
    font-size: 0.82rem;
    line-height: 1.45;
    margin-bottom: 0.7rem;
    color: var(--text-secondary);
}

.btn-emergency-call {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: #ff3b30;
    color: #ffffff;
    padding: 0.45rem 0.8rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.8rem;
    text-decoration: none;
    transition: filter 0.2s ease;
}

.btn-emergency-call:hover {
    filter: brightness(1.1);
}

@keyframes pulseBorder {
    0%, 100% {
        box-shadow: 0 0 0 rgba(255, 59, 48, 0);
        border-color: #ff3b30;
    }
    50% {
        box-shadow: 0 0 10px rgba(255, 59, 48, 0.25);
        border-color: rgba(255, 59, 48, 0.6);
    }
}

#reg-city-back-to-list {
    transition: color 0.2s ease, opacity 0.2s ease;
}
#reg-city-back-to-list:hover {
    color: var(--text-primary) !important;
    opacity: 0.9;
}

/* Sidebar and Chat History Styles */
.chat-sidebar {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    bottom: 0;
    width: 270px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 16px 16px 0 0;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    padding: 1.5rem 1rem;
    box-shadow: 5px 0 35px rgba(0, 0, 0, 0.4);
    z-index: 100;
    transform: translateX(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease, visibility 0.4s ease;
}

.chat-sidebar.open {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
}

.btn-new-chat {
    background: var(--accent-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.8rem 1rem;
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    margin-bottom: 1.5rem;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-new-chat:hover {
    border-color: var(--border-hover);
    background: var(--text-primary);
    color: var(--bg-color);
    transform: translateY(-1px);
}

.sidebar-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 0.75rem;
    padding-left: 0.5rem;
}

.chat-sessions-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-right: 0.2rem;
}

.chat-sessions-list::-webkit-scrollbar {
    width: 4px;
}
.chat-sessions-list::-webkit-scrollbar-track {
    background: transparent;
}
.chat-sessions-list::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 2px;
}

.chat-session-item {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 0.75rem 0.85rem;
    border-radius: 8px;
    font-size: 0.85rem;
    text-align: left;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    width: 100%;
    transition: all 0.2s ease;
}

.chat-session-item:hover {
    background: var(--accent-glow);
    color: var(--text-primary);
}

.chat-session-item.active {
    background: var(--accent-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
    font-weight: 500;
}

/* Sidebar toggles and mobile rules */
#sidebar-toggle {
    margin-right: 0.5rem;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 90;
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.sidebar-overlay.open {
    opacity: 1;
    pointer-events: all;
    visibility: visible;
}

@media (max-width: 600px) {
    .chat-sidebar {
        left: 0.5rem;
        width: 250px;
    }
}

@media (max-width: 480px) {
    .register-card {
        padding: 1.5rem;
        width: 92%;
    }
    .register-title {
        font-size: 1.3rem;
        margin-bottom: 0.25rem;
    }
    .register-subtitle {
        margin-bottom: 1.5rem;
        font-size: 0.78rem;
    }
    .register-card .form-group input,
    .register-card .form-group select {
        padding: 0.7rem 0.85rem;
    }
}

@media (max-width: 400px) {
    #status-text {
        display: none;
    }
}