/**
 * C4-AI Chat Widget - iOS-inspired Minimal Design
 */

/* ============ Variables ============ */
:root {
    --c4ai-primary: #007AFF;
    --c4ai-primary-light: #EBF5FF;
    --c4ai-bg: #F2F2F7;
    --c4ai-surface: #FFFFFF;
    --c4ai-text: #1C1C1E;
    --c4ai-text-secondary: #8E8E93;
    --c4ai-border: #E5E5EA;
    --c4ai-green: #34C759;
    --c4ai-red: #FF3B30;
    --c4ai-orange: #FF9500;
    --c4ai-user-bubble: #007AFF;
    --c4ai-bot-bubble: #FFFFFF;
    --c4ai-support-bubble: #F0FFF4;
    --c4ai-radius: 20px;
    --c4ai-radius-sm: 12px;
    --c4ai-shadow: 0 8px 30px rgba(0,0,0,0.12);
    --c4ai-shadow-sm: 0 2px 10px rgba(0,0,0,0.08);
}

/* ============ Container ============ */
#c4ai-widget-container {
    position: fixed;
    z-index: 999999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    direction: rtl;
}
#c4ai-widget-container.c4ai-widget-bottom-right { bottom: 20px; right: 20px; }
#c4ai-widget-container.c4ai-widget-bottom-left { bottom: 20px; left: 20px; }

/* ============ Toggle Button ============ */
.c4ai-widget-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--c4ai-primary);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0,122,255,0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s cubic-bezier(.4,0,.2,1);
    position: relative;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}
.c4ai-widget-btn:hover { transform: scale(1.08); box-shadow: 0 6px 24px rgba(0,122,255,0.45); }
.c4ai-widget-btn:active { transform: scale(0.95); }
.c4ai-widget-btn-icon { font-size: 24px; line-height: 1; transition: opacity 0.2s, transform 0.2s; }
.c4ai-widget-btn.open .c4ai-widget-btn-icon { opacity: 0; transform: scale(0); position: absolute; }
.c4ai-widget-btn.open::after {
    content: '';
    width: 18px; height: 18px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2.5' stroke-linecap='round'%3E%3Cline x1='18' y1='6' x2='6' y2='18'/%3E%3Cline x1='6' y1='6' x2='18' y2='18'/%3E%3C/svg%3E") no-repeat center;
}

/* ============ Badge ============ */
.c4ai-widget-badge {
    position: absolute; top: -3px; right: -3px;
    background: var(--c4ai-red); color: #fff;
    min-width: 20px; height: 20px; border-radius: 10px;
    font-size: 11px; font-weight: 600;
    display: none; align-items: center; justify-content: center;
    padding: 0 5px; border: 2px solid #fff;
}
.c4ai-widget-badge.show { display: flex; animation: c4ai-bounce 0.4s ease; }
@keyframes c4ai-bounce { 0%,100%{transform:scale(1)} 50%{transform:scale(1.2)} }

/* ============ Chat Window ============ */
.c4ai-chat-window {
    position: absolute; bottom: 72px;
    width: 375px; height: 560px;
    background: var(--c4ai-bg);
    border-radius: 16px;
    box-shadow: var(--c4ai-shadow);
    display: none; flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.06);
}
.c4ai-widget-bottom-right .c4ai-chat-window { right: 0; }
.c4ai-widget-bottom-left .c4ai-chat-window { left: 0; }
.c4ai-chat-window.open { display: flex; animation: c4ai-slide-up 0.3s cubic-bezier(.4,0,.2,1); }
@keyframes c4ai-slide-up { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:translateY(0)} }

/* ============ Header ============ */
.c4ai-chat-header {
    background: var(--c4ai-surface);
    padding: 14px 16px;
    display: flex; align-items: center; gap: 10px;
    border-bottom: 0.5px solid var(--c4ai-border);
    min-height: 56px;
}
.c4ai-chat-avatar {
    width: 38px; height: 38px;
    background: var(--c4ai-primary-light);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; flex-shrink: 0;
}
.c4ai-chat-avatar img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
.c4ai-chat-info { flex: 1; min-width: 0; }
.c4ai-chat-name {
    font-size: 15px; font-weight: 600; margin: 0;
    color: var(--c4ai-text); line-height: 1.3;
}
.c4ai-chat-status {
    font-size: 12px; color: var(--c4ai-text-secondary);
    display: flex; align-items: center; gap: 5px; margin-top: 1px;
}
.c4ai-status-dot { width: 7px; height: 7px; background: var(--c4ai-green); border-radius: 50%; flex-shrink: 0; }
.c4ai-status-dot.offline { background: var(--c4ai-text-secondary); }

/* Header Action Buttons */
.c4ai-header-actions { display: flex; gap: 4px; flex-shrink: 0; }
.c4ai-header-btn {
    width: 34px; height: 34px;
    background: none; border: none;
    border-radius: 50%; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.15s;
    color: var(--c4ai-text-secondary);
    padding: 0;
}
.c4ai-header-btn:hover { background: var(--c4ai-bg); }
.c4ai-header-btn.active { color: var(--c4ai-primary); background: var(--c4ai-primary-light); }
.c4ai-header-btn svg { width: 20px; height: 20px; }

/* ============ Messages ============ */
.c4ai-chat-messages {
    flex: 1; padding: 12px 14px;
    overflow-y: auto; overflow-x: hidden;
    background: var(--c4ai-bg);
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}
.c4ai-chat-messages::-webkit-scrollbar { width: 4px; }
.c4ai-chat-messages::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.15); border-radius: 2px; }

.c4ai-message { margin-bottom: 6px; display: flex; align-items: flex-end; }
.c4ai-message-bot { justify-content: flex-start; }
.c4ai-message-user { justify-content: flex-end; }
.c4ai-message-support { justify-content: flex-start; }

.c4ai-message-bubble {
    max-width: 78%; padding: 9px 13px;
    border-radius: 18px; font-size: 14px; line-height: 1.55;
    word-wrap: break-word; position: relative;
}
.c4ai-message-bot .c4ai-message-bubble {
    background: var(--c4ai-bot-bubble);
    color: var(--c4ai-text);
    border-bottom-right-radius: 6px;
    box-shadow: var(--c4ai-shadow-sm);
}
.c4ai-message-user .c4ai-message-bubble {
    background: var(--c4ai-user-bubble);
    color: #fff;
    border-bottom-left-radius: 6px;
}
.c4ai-message-support .c4ai-message-bubble {
    background: var(--c4ai-support-bubble);
    color: var(--c4ai-text);
    border-bottom-right-radius: 6px;
    border: 0.5px solid #C6F6D5;
    box-shadow: var(--c4ai-shadow-sm);
}

/* Support label */
.c4ai-support-label {
    font-size: 11px; color: var(--c4ai-green); font-weight: 600;
    margin-bottom: 3px; display: flex; align-items: center; gap: 4px;
}

/* Message time */
.c4ai-message-time {
    font-size: 10px; color: var(--c4ai-text-secondary);
    margin-top: 3px; opacity: 0.8;
}
.c4ai-message-user .c4ai-message-time { color: rgba(255,255,255,0.7); }

/* Message Buttons */
.c4ai-message-buttons { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.c4ai-btn {
    background: var(--c4ai-surface); color: var(--c4ai-primary);
    border: 1px solid var(--c4ai-primary);
    border-radius: 18px; padding: 7px 14px;
    font-size: 13px; cursor: pointer;
    transition: all 0.15s; font-weight: 500;
}
.c4ai-btn:hover { background: var(--c4ai-primary); color: #fff; }

/* ============ Media ============ */
.c4ai-media { margin: 4px 0; border-radius: var(--c4ai-radius-sm); overflow: hidden; }
.c4ai-media img { max-width: 100%; border-radius: var(--c4ai-radius-sm); cursor: pointer; display: block; }
.c4ai-media audio {
    width: 100%; min-width: 200px; height: 40px;
    display: block; border-radius: 8px;
}

/* ============ Typing ============ */
.c4ai-typing { display: none; padding: 8px 14px; }
.c4ai-typing.show { display: flex; }
.c4ai-typing-dots {
    display: flex; gap: 4px;
    background: var(--c4ai-surface);
    padding: 10px 14px; border-radius: 18px;
    box-shadow: var(--c4ai-shadow-sm);
}
.c4ai-typing-dot {
    width: 7px; height: 7px; background: #C7C7CC;
    border-radius: 50%; animation: c4ai-typing 1.4s infinite;
}
.c4ai-typing-dot:nth-child(2) { animation-delay: 0.15s; }
.c4ai-typing-dot:nth-child(3) { animation-delay: 0.3s; }
@keyframes c4ai-typing { 0%,60%,100%{transform:translateY(0)} 30%{transform:translateY(-4px)} }

/* ============ Input Area ============ */
.c4ai-chat-input {
    padding: 10px 12px;
    background: var(--c4ai-surface);
    border-top: 0.5px solid var(--c4ai-border);
    display: flex; align-items: center; gap: 6px;
}
.c4ai-chat-input input[type="text"] {
    flex: 1; border: none; background: var(--c4ai-bg);
    border-radius: 20px; padding: 10px 14px;
    font-size: 14px; outline: none;
    color: var(--c4ai-text);
    min-width: 0;
}
.c4ai-chat-input input[type="text"]::placeholder { color: var(--c4ai-text-secondary); }
.c4ai-chat-input input[type="text"]:focus { box-shadow: 0 0 0 2px rgba(0,122,255,0.2); }

/* Send Button */
#c4ai-send {
    width: 36px; height: 36px; min-width: 36px;
    background: var(--c4ai-primary); border: none;
    border-radius: 50%; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.15s; padding: 0; outline: none;
}
#c4ai-send:hover { transform: scale(1.06); }
#c4ai-send:active { transform: scale(0.94); }
#c4ai-send:disabled { background: var(--c4ai-border); cursor: not-allowed; }
#c4ai-send svg { width: 16px; height: 16px; fill: #fff; }

/* Media Buttons */
.c4ai-media-btn {
    width: 34px !important; height: 34px !important; min-width: 34px;
    background: none !important; border: none !important;
    border-radius: 50%; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.15s; padding: 0;
    color: var(--c4ai-text-secondary);
}
.c4ai-media-btn:hover { background: var(--c4ai-bg) !important; color: var(--c4ai-primary); }
.c4ai-media-btn svg { fill: none !important; stroke: currentColor; width: 20px; height: 20px; }
.c4ai-media-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.c4ai-media-btn.recording {
    color: var(--c4ai-red) !important;
    animation: c4ai-pulse 1s infinite;
}
@keyframes c4ai-pulse { 0%,100%{box-shadow:0 0 0 0 rgba(255,59,48,0.3)} 50%{box-shadow:0 0 0 8px rgba(255,59,48,0)} }

/* ============ Login Overlay ============ */
.c4ai-login-overlay {
    position: absolute; inset: 0; z-index: 10;
    background: rgba(242,242,247,0.97);
    display: flex; align-items: center; justify-content: center;
    padding: 24px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.c4ai-login-box { text-align: center; max-width: 280px; width: 100%; }
.c4ai-login-icon { font-size: 44px; margin-bottom: 14px; }
.c4ai-login-box h3 {
    margin: 0 0 6px; font-size: 19px; font-weight: 700;
    color: var(--c4ai-text);
}
.c4ai-login-box p {
    color: var(--c4ai-text-secondary); font-size: 14px;
    margin: 0 0 20px; line-height: 1.5;
}
.c4ai-login-box input {
    width: 100%; border: 1px solid var(--c4ai-border);
    border-radius: var(--c4ai-radius-sm);
    padding: 12px 14px; font-size: 15px;
    margin-bottom: 12px; text-align: center;
    outline: none; background: var(--c4ai-surface);
    color: var(--c4ai-text);
    transition: border-color 0.2s;
}
.c4ai-login-box input:focus { border-color: var(--c4ai-primary); box-shadow: 0 0 0 3px rgba(0,122,255,0.1); }
.c4ai-login-btn {
    width: 100%; background: var(--c4ai-primary); color: #fff;
    border: none; border-radius: var(--c4ai-radius-sm);
    padding: 12px; font-size: 15px; font-weight: 600;
    cursor: pointer; transition: opacity 0.15s;
}
.c4ai-login-btn:hover { opacity: 0.9; }
.c4ai-login-btn:disabled { opacity: 0.5; }

.c4ai-login-choices { display: flex; flex-direction: column; gap: 8px; }
.c4ai-login-choice {
    background: var(--c4ai-surface); border: 1px solid var(--c4ai-border);
    border-radius: var(--c4ai-radius-sm);
    padding: 12px; font-size: 14px; cursor: pointer;
    transition: all 0.15s; font-weight: 500; color: var(--c4ai-text);
}
.c4ai-login-choice:hover { border-color: var(--c4ai-primary); color: var(--c4ai-primary); background: var(--c4ai-primary-light); }

/* ============ Support Banner ============ */
.c4ai-support-banner {
    background: linear-gradient(135deg, #E8F5E9, #F1F8E9);
    padding: 8px 14px;
    display: flex; align-items: center; gap: 8px;
    font-size: 13px; color: #2E7D32; font-weight: 500;
    border-bottom: 0.5px solid #C8E6C9;
}
.c4ai-support-banner svg { flex-shrink: 0; }
.c4ai-support-banner-text { flex: 1; }
.c4ai-support-banner-close {
    background: none; border: none; cursor: pointer;
    color: #2E7D32; padding: 2px; border-radius: 50%;
    display: flex; align-items: center;
}

/* ============ Notification ============ */
.c4ai-notification {
    position: absolute; bottom: 72px; right: 0;
    background: var(--c4ai-surface);
    border-radius: 14px;
    box-shadow: var(--c4ai-shadow);
    padding: 12px 16px; max-width: 260px; min-width: 140px;
    opacity: 0; transform: translateY(8px) scale(0.96);
    transition: all 0.25s cubic-bezier(.4,0,.2,1);
    cursor: pointer;
}
.c4ai-notification.show { opacity: 1; transform: translateY(0) scale(1); }
.c4ai-notification::after {
    content: ''; position: absolute; bottom: -6px; right: 20px;
    width: 12px; height: 12px; background: var(--c4ai-surface);
    transform: rotate(45deg); box-shadow: 2px 2px 4px rgba(0,0,0,0.05);
}
.c4ai-notification-content { font-size: 13px; color: var(--c4ai-text); line-height: 1.5; }
.c4ai-widget-bottom-left .c4ai-notification { right: auto; left: 0; }
.c4ai-widget-bottom-left .c4ai-notification::after { right: auto; left: 20px; }

/* ============ Date Separator ============ */
.c4ai-date-sep {
    text-align: center; padding: 10px 0 6px;
    font-size: 11px; color: var(--c4ai-text-secondary); font-weight: 500;
}
.c4ai-date-sep span {
    background: rgba(0,0,0,0.06); padding: 3px 10px;
    border-radius: 8px;
}

/* ============ Mobile ============ */
@media (max-width: 480px) {
    #c4ai-widget-container { bottom: 16px !important; right: 16px !important; left: auto !important; }
    #c4ai-widget-container.c4ai-widget-bottom-left { right: auto !important; left: 16px !important; }
    .c4ai-widget-btn { width: 52px; height: 52px; }
    .c4ai-widget-btn-icon { font-size: 22px; }
    .c4ai-chat-window {
        width: calc(100vw - 16px); height: calc(100dvh - 90px);
        max-height: 580px; bottom: 66px;
        right: -8px !important; left: -8px !important;
        border-radius: 16px;
    }
    .c4ai-notification { max-width: 220px; bottom: 66px; }
    .c4ai-login-box input, .c4ai-login-btn { font-size: 16px !important; }
}

/* ============ Dark Mode (Auto) ============ */
@media (prefers-color-scheme: dark) {
    :root {
        --c4ai-bg: #1C1C1E;
        --c4ai-surface: #2C2C2E;
        --c4ai-text: #F2F2F7;
        --c4ai-text-secondary: #8E8E93;
        --c4ai-border: #38383A;
        --c4ai-bot-bubble: #2C2C2E;
        --c4ai-support-bubble: #1B2E1F;
    }
}

/* ============ Touch ============ */
@media (hover: none) and (pointer: coarse) {
    .c4ai-widget-btn:active { transform: scale(0.93); }
    .c4ai-btn:active { opacity: 0.7; }
}