/**
 * ═══════════════════════════════════════════════════════════════════════════
 * RADIM BIDIRECTIONAL CHAT - Styles
 * ═══════════════════════════════════════════════════════════════════════════
 * "Jsem prostor, kde se dva setkávají"
 */

:root {
    --radim-primary: #5BA8A0;
    --radim-primary-dark: #4A9690;
    --radim-secondary: #F07D7E;
    --radim-risk-low: #48bb78;
    --radim-risk-medium: #f6ad55;
    --radim-risk-high: #fc8181;
    --radim-text: #2d3748;
    --radim-text-light: #718096;
    --radim-bg: #FFFFFF;
    --radim-bg-light: #f0f5f5;
    --radim-border: rgba(91, 168, 160, 0.15);
    --radim-shadow: rgba(91, 168, 160, 0.1);
    
    /* Golden ratio spacing */
    --phi: 1.618;
    --spacing-xs: 4px;
    --spacing-sm: calc(var(--spacing-xs) * var(--phi)); /* 6.5px */
    --spacing-md: calc(var(--spacing-sm) * var(--phi)); /* 10.5px */
    --spacing-lg: calc(var(--spacing-md) * var(--phi)); /* 17px */
    --spacing-xl: calc(var(--spacing-lg) * var(--phi)); /* 27.5px */
}

/* ═══════════════════════════════════════════════════════════════════════════
   CONTAINER
   ═══════════════════════════════════════════════════════════════════════════ */

/* v525: ONLY chat module — no leak to other modules */
#module-chat {
    padding: 4px !important;
}

.radim-chat-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 80px);
    height: calc(100dvh - 80px);
    min-height: 300px;
    background: var(--radim-bg);
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--radim-shadow);
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    position: relative;
}

/* Senior version - larger, simpler */
.radim-chat-container[data-role="senior"] {
    height: calc(100vh - 80px);
    height: calc(100dvh - 80px);
    min-height: 400px;
    border-radius: 8px;
    margin: 0;
}

/* ═══════════════════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════════════════ */

.radim-chat-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--radim-primary), var(--radim-primary-dark));
    color: white;
    border-bottom: 1px solid var(--radim-border);
}

.radim-chat-avatar {
    position: relative;
}

.radim-avatar-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: radim-pulse 2s ease-in-out infinite;
}

@keyframes radim-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.9; }
}

.radim-chat-title h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.radim-chat-status {
    font-size: 12px;
    opacity: 0.9;
}

.radim-chat-status.connected {
    color: var(--radim-risk-low);
}

.radim-chat-status.disconnected {
    color: var(--radim-risk-high);
}

.radim-chat-info {
    margin-left: auto;
}

.radim-risk-indicator {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--radim-risk-low);
    box-shadow: 0 0 10px currentColor;
}

/* ═══════════════════════════════════════════════════════════════════════════
   MESSAGES
   ═══════════════════════════════════════════════════════════════════════════ */

.radim-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    background: var(--radim-bg-light);
}

.radim-chat-messages::-webkit-scrollbar {
    width: 8px;
}

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

.radim-chat-messages::-webkit-scrollbar-thumb {
    background: var(--radim-border);
    border-radius: 4px;
}

.radim-chat-welcome {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--radim-text-light);
    font-size: 16px;
    line-height: 1.6;
}

/* Senior version - larger text */
[data-role="senior"] .radim-chat-welcome {
    font-size: 24px;
    line-height: 1.8;
}

/* ═══════════════════════════════════════════════════════════════════════════
   MESSAGE BUBBLES
   ═══════════════════════════════════════════════════════════════════════════ */

.radim-message {
    display: flex;
    flex-direction: column;
    max-width: 75%;
    animation: radim-message-in 0.3s ease-out;
}

@keyframes radim-message-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.radim-message-own {
    align-self: flex-end;
}

.radim-message-label {
    font-size: 12px;
    color: var(--radim-text-light);
    margin-bottom: 4px;
    margin-left: 8px;
}

.radim-message-bubble {
    background: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 18px;
    box-shadow: 0 1px 2px var(--radim-shadow);
    word-wrap: break-word;
    font-size: 15px;
    line-height: 1.5;
}

/* Own messages */
.radim-message-own .radim-message-bubble {
    background: var(--radim-primary);
    color: white;
}

/* Radim messages - special styling */
.radim-message-radim .radim-message-bubble,
.radim-message-radim_to_senior .radim-message-bubble,
.radim-message-radim_to_carer .radim-message-bubble {
    background: white;
    border: 2px solid var(--radim-primary);
    color: var(--radim-text);
}

/* Senior messages */
.radim-message-senior .radim-message-bubble {
    background: #E3F2FD;
}

/* Caregiver messages */
.radim-message-caregiver .radim-message-bubble {
    background: #FFF3E0;
}

/* Senior version - larger bubbles */
[data-role="senior"] .radim-message-bubble {
    font-size: 22px;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 24px;
}

.radim-message-time {
    font-size: 11px;
    color: var(--radim-text-light);
    margin-top: 4px;
    margin-left: 8px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   INPUT AREA
   ═══════════════════════════════════════════════════════════════════════════ */

.radim-chat-input {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: white;
    border-top: 1px solid var(--radim-border);
}

/* Text input (caregiver) */
.radim-text-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--radim-border);
    border-radius: 20px;
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
}

.radim-text-input:focus {
    border-color: var(--radim-primary);
}

.radim-send-button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--radim-primary);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, background 0.2s;
}

.radim-send-button:hover {
    background: var(--radim-primary-dark);
    transform: scale(1.05);
}

.radim-send-button:active {
    transform: scale(0.95);
}

.radim-send-button svg {
    fill: white;
}

/* Voice button (senior) */
.radim-voice-button {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: var(--radim-primary);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin: 0 auto;
    box-shadow: 0 4px 12px var(--radim-shadow);
    transition: transform 0.2s, background 0.2s;
    -webkit-user-select: none;
    user-select: none;
}

.radim-voice-button:hover {
    background: var(--radim-primary-dark);
}

.radim-voice-button:active {
    transform: scale(0.95);
    background: var(--radim-risk-high);
}

.radim-voice-button svg {
    fill: white;
}

.radim-voice-button span {
    font-size: 16px;
    font-weight: 500;
}

.radim-voice-button.listening {
    background: var(--radim-risk-high);
    animation: radim-listening-pulse 1s ease-in-out infinite;
}

@keyframes radim-listening-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
    .radim-chat-container {
        height: calc(100vh - 90px);
        height: calc(100dvh - 90px);
        border-radius: 0;
        margin: 0;
        padding-bottom: env(safe-area-inset-bottom, 0);
    }

    .radim-message {
        max-width: 92%;
    }

    .radim-chat-header {
        padding: var(--spacing-lg);
    }
}

/* Senior-specific adjustments */
[data-role="senior"] .radim-chat-input {
    padding: var(--spacing-xl);
}

[data-role="senior"] .radim-voice-button {
    width: 160px;
    height: 160px;
}

[data-role="senior"] .radim-voice-button span {
    font-size: 18px;
}

/* v529: Mobile chat — EVERYTHING on one screen, no scroll */
@media (max-width: 1024px) {
    #module-chat {
        padding: 0 !important;
        margin: 0 !important;
        overflow: hidden !important;
    }

    /* Container = exact viewport minus topbar + bottom nav */
    .radim-chat-container,
    .radim-simple-chat-container,
    .radim-chat-container[data-role="senior"] {
        height: calc(100vh - 200px) !important;
        height: calc(100dvh - 200px) !important;
        min-height: 0 !important;
        max-height: calc(100vh - 200px) !important;
        border-radius: 0 !important;
        margin: 0 !important;
        box-shadow: none !important;
        display: flex !important;
        flex-direction: column !important;
        overflow: hidden !important;
    }

    /* Header — thin single line */
    .radim-chat-header {
        padding: 6px 10px !important;
        min-height: 0 !important;
        flex-shrink: 0 !important;
    }
    .radim-chat-header .radim-chat-avatar,
    .radim-chat-header .radim-avatar-circle {
        width: 28px !important;
        height: 28px !important;
        font-size: 0.8rem !important;
    }
    .radim-chat-header h3 {
        font-size: 0.85rem !important;
    }

    /* Welcome — MINIMAL on mobile */
    .radim-chat-welcome {
        padding: 12px !important;
    }
    .radim-chat-welcome .radim-welcome-icon {
        font-size: 1.5rem !important;
        margin-bottom: 4px !important;
    }
    .radim-chat-welcome h3 {
        font-size: 0.9rem !important;
        margin: 2px 0 !important;
    }
    .radim-chat-welcome p {
        font-size: 0.8rem !important;
        margin: 0 !important;
    }

    /* Messages — FLEX FILL remaining space, scrollable */
    .radim-chat-messages {
        flex: 1 !important;
        min-height: 0 !important;
        overflow-y: auto !important;
    }

    /* Suggestions — compact horizontal scroll */
    .radim-suggested-buttons {
        padding: 4px 6px !important;
        gap: 4px !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        flex-shrink: 0 !important;
    }
    .radim-suggested-buttons button {
        font-size: 0.7rem !important;
        padding: 4px 8px !important;
        white-space: nowrap !important;
        flex-shrink: 0 !important;
    }

    /* Input — compact, always visible at bottom */
    .radim-chat-input-container {
        padding: 6px 8px !important;
        flex-shrink: 0 !important;
    }
    .radim-chat-input {
        font-size: 16px !important;
        padding: 8px 10px !important;
    }
}

/* PWA standalone — extra safe area */
@media (max-width: 1024px) and (display-mode: standalone) {
    .radim-chat-container,
    .radim-simple-chat-container,
    .radim-chat-container[data-role="senior"] {
        height: calc(100vh - 240px) !important;
        height: calc(100dvh - 240px) !important;
        max-height: calc(100vh - 240px) !important;
    }
}