/* ============================================
   CHAT REBUILD - COMPLETE RESTRUCTURE
   Fixed input bar above footer, clean layout
   ============================================ */

/* ========================================
   CRITICAL: RESET PROBLEMATIC STYLES
   ======================================== */

/* Override all previous chat layout attempts */
#chatScreen {
    display: block !important;
    flex-direction: initial !important;
    height: auto !important;
    padding-bottom: 0 !important;
}

#actualChat {
    display: block !important;
    flex-direction: initial !important;
    height: auto !important;
}

/* ========================================
   SCREEN STRUCTURE - ABSOLUTE POSITIONING
   ======================================== */

/* All screens fill viewport */
.screen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: white;
    overflow: hidden;
}

/* Chat Screen: inherits position from .screen; desktop centering via critical-ui-fix.css */
#chatScreen {
    display: block;
    background: #f5f5f5;
}

/* ========================================
   ACTUAL CHAT - LAYERED STRUCTURE
   ======================================== */

#actualChat {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: none; /* Hidden by default */
}

#actualChat[style*="display: flex"],
#actualChat[style*="display: block"] {
    display: block !important;
}

/* Chat Header V2 */
.chat-hdr {
    z-index: 50;
}

/* Open Quizzes List: Below header */
.open-quizzes-list {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    z-index: 45;
    max-height: 200px;
    overflow-y: auto;
    background: white;
    border-bottom: 1px solid #e0e0e0;
}

/* Chat Messages: Scrollable area between header and input */
.chat-messages {
    position: fixed;
    top: 80px; /* Below new header (two rows) */
    left: 0;
    right: 0;
    bottom: 150px; /* Above input (70px) + footer (80px) */
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    padding: 16px;
    background: #f5f5f5;
}

/* Adjust when open quizzes list is visible */
body.has-open-quizzes .chat-messages {
    top: 260px; /* header (60px) + quizzes list (~200px) */
}

/* ========================================
   CHAT INPUT - FIXED ABOVE FOOTER
   ======================================== */

/* CRITICAL: Input Container - FIXED above app-nav */
.chat-input-container {
    position: fixed !important;
    left: 0;
    right: 0;
    bottom: 80px !important; /* Exactly above app-nav (80px height) */
    height: 70px;
    background: white;
    border-top: 1px solid #e0e0e0;
    padding: 12px 16px;
    z-index: 90 !important;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.08);
}

/* Input Wrapper: 3-column grid */
.chat-input-wrapper {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 12px;
    height: 100%;
    align-items: center;
}

/* Left placeholder */
.chat-input-left {
    display: flex;
    align-items: center;
}

/* Center input */
.chat-input-center {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #f5f5f5;
    border-radius: 24px;
    padding: 8px 16px;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

.chat-input-center input {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    font-size: 15px;
    color: #1a1a1a;
}

.chat-input-center input::placeholder {
    color: #999;
}

/* Photo button */
.photo-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    transition: color 0.2s ease;
}

.photo-btn:hover {
    color: #E91E63;
}

/* Right send button */
.chat-input-right {
    display: flex;
    align-items: center;
}

.send-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #E91E63, #F06292);
    border: none;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(233, 30, 99, 0.3);
}

.send-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(233, 30, 99, 0.4);
}

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

/* ========================================
   APP NAVIGATION - FIXED AT BOTTOM
   ======================================== */

.app-nav {
    position: fixed !important;
    bottom: 0 !important;
    left: 0;
    right: 0;
    height: 80px;
    background: white;
    border-top: 1px solid #e0e0e0;
    z-index: 100 !important;
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: 0 16px;
}

/* ========================================
   PROFILE SELECTION STATE
   ======================================== */

#profileSelection {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 80px; /* Above app-nav */
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    background: white;
    display: none;
}

#profileSelection[style*="display: flex"] {
    display: block !important;
}

.profile-selection-container {
    padding: 20px 16px;
    padding-bottom: 40px;
}

/* ========================================
   QUIZ OVERLAY - FULLSCREEN
   ======================================== */

#quizFlow {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    background: white;
    display: none;
    overflow-y: auto;
}

#quizFlow.active {
    display: block !important;
}

/* Hide input and nav when quiz is active */
body.quiz-open .chat-input-container,
body.quiz-open .app-nav {
    display: none !important;
}

/* ========================================
   MOBILE OPTIMIZATIONS
   ======================================== */

@media (max-width: 600px) {
    /* Adjust spacing for mobile */
    .chat-messages {
        padding: 12px;
        bottom: 150px; /* Same as desktop */
    }

    .chat-input-container {
        height: 70px;
        padding: 10px 12px;
    }

    .chat-input-center {
        padding: 6px 12px;
    }

    .chat-input-center input {
        font-size: 16px; /* Prevent zoom on iOS */
    }

    /* Prevent mobile keyboard issues */
    .chat-input-container {
        position: fixed !important;
        bottom: 80px !important;
    }
}

/* iOS Safari specific fixes */
@supports (-webkit-touch-callout: none) {
    /* Use safe area insets if available */
    .app-nav {
        padding-bottom: env(safe-area-inset-bottom, 0);
        height: calc(80px + env(safe-area-inset-bottom, 0));
    }

    .chat-input-container {
        bottom: calc(80px + env(safe-area-inset-bottom, 0)) !important;
    }

    .chat-messages {
        bottom: calc(150px + env(safe-area-inset-bottom, 0));
    }
}

/* ========================================
   PERFORMANCE OPTIMIZATIONS
   ======================================== */

.chat-messages {
    contain: layout style;
    will-change: scroll-position;
}

.chat-input-container,
.app-nav {
    contain: layout style paint;
    will-change: transform;
}

/* Smooth scrolling */
.chat-messages,
#profileSelection {
    scroll-behavior: smooth;
}

/* ========================================
   CREDITS BUTTON - PROMINENT PLACEMENT
   ======================================== */

/* Credits Section in Profile - Highlighted */
.profile-credits-section {
    margin: 24px 0;
    padding: 20px;
    background: linear-gradient(135deg, #E91E63 0%, #F06292 100%);
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(233, 30, 99, 0.25);
    position: relative;
    overflow: hidden;
}

.profile-credits-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.credits-balance {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.credits-amount {
    display: flex;
    align-items: center;
    gap: 8px;
}

.credits-icon {
    width: 32px;
    height: 32px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.credits-number {
    font-size: 32px;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.credits-label {
    font-size: 14px;
    color: rgba(255,255,255,0.9);
    margin-left: 8px;
}

.credits-buy-btn {
    background: white;
    color: #E91E63;
    border: none;
    padding: 12px 24px;
    border-radius: 24px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    justify-content: center;
}

.credits-buy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.credits-buy-btn:active {
    transform: translateY(0);
}

.credits-buy-icon {
    font-size: 18px;
}

/* Remove old option-btn-primary styling */
.option-btn-primary {
    background: transparent !important;
    border: 1px solid #e0e0e0 !important;
    color: inherit !important;
    box-shadow: none !important;
}

/* ========================================
   LAYOUT STABILITY
   ======================================== */

/* Prevent content shift */
* {
    box-sizing: border-box;
}

/* Ensure all fixed elements are properly layered */
.chat-hdr { z-index: 50; }
.open-quizzes-list { z-index: 45; }
.chat-messages { z-index: 10; }
.chat-input-container { z-index: 90; }
.app-nav { z-index: 100; }
#quizFlow { z-index: 9999; }

/* ========================================
   ACCESSIBILITY
   ======================================== */

.chat-input-container:focus-within {
    box-shadow: 0 -2px 16px rgba(233, 30, 99, 0.2);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .chat-input-container,
    .app-nav,
    .chat-hdr {
        border-width: 2px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }

    .chat-messages {
        scroll-behavior: auto;
    }
}

/* ========================================
   SEND BUTTON - GUARANTEED VISIBILITY
   ======================================== */

/* Ensure send button and container are always visible */
.chat-input-right {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.send-btn {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    width: 44px !important;
    height: 44px !important;
    min-width: 44px !important;
    min-height: 44px !important;
    background: linear-gradient(135deg, #E91E63, #F06292) !important;
    border: none !important;
    border-radius: 50% !important;
    color: white !important;
    cursor: pointer !important;
    align-items: center !important;
    justify-content: center !important;
    box-shadow: 0 2px 8px rgba(233, 30, 99, 0.3) !important;
}

.send-btn svg {
    display: block !important;
    visibility: visible !important;
    width: 20px !important;
    height: 20px !important;
}

/* Ensure chat-input-container is visible when actualChat is shown */
#actualChat .chat-input-container,
#chatScreen .chat-input-container {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}