/**
 * Beton Ghadir Assistant - CSS Styles
 * Chat-First Layout: پیام‌ها در بالا، منو Grid 2×2 در پایین
 */

:root {
    --primary: #667eea;
    --primary-dark: #764ba2;
    --accent-blue: #5b8dff;
    --glass-bg: rgba(18, 18, 22, 0.28);
    --glass-bg-soft: rgba(24, 24, 28, 0.30);
    --glass-btn-bg: rgba(24, 30, 52, 0.56);
    --glass-border: rgba(190, 210, 255, 0.24);
    --glass-blur: 38px;
    --glass-saturate: 140%;
    --glass-inner-top: rgba(255, 255, 255, 0.14);
    --glass-inner-mid: rgba(255, 255, 255, 0.05);
    --glass-inner-bottom: rgba(255, 255, 255, 0.015);
    --glass-panel-dark-1: rgba(14, 18, 32, 0.52);
    --glass-panel-dark-2: rgba(10, 14, 26, 0.38);
    --light: #f8f9ff;
    --border: #e0e7ff;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* دکمه شناور اصلی */
#beton-chat-toggle {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 65px;
    height: 65px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    z-index: 9998;
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
    color: white;
    padding: 0;
    visibility: visible;
    opacity: 1;
}

#beton-chat-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 32px rgba(102, 126, 234, 0.6);
}

#beton-chat-toggle:active {
    transform: scale(0.95);
}

#beton-chat-toggle.hide {
    visibility: hidden;
    opacity: 0;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4); }
    50% { box-shadow: 0 8px 32px rgba(102, 126, 234, 0.7); }
}

/* انیمیشن تایپینگ - سه نقطه */
@keyframes typing {
    0%, 20% {
        content: '...';
    }
    40% {
        content: '•';
    }
    60% {
        content: '••';
    }
    80% {
        content: '•••';
    }
}

.beton-typing-indicator {
    display: inline-flex;
    align-items: center;
    gap: 2px;
}

.beton-typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ffffff;
    animation: typingBounce 1.4s infinite;
}

.beton-typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.beton-typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingBounce {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.7;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

/* انیمیشن حالت فکر کردن */
.beton-thinking {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.beton-thinking-orb {
    position: relative;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.beton-thinking-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ffffff;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.55);
}

.beton-thinking-dot.dot-core {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.beton-thinking-dot.dot-orbit {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: thinkingOrbit 2.4s infinite ease-in-out;
}

@keyframes thinkingOrbit {
    0% {
        transform: translate(-50%, -50%) rotate(0deg) translateX(0);
        opacity: 0;
    }
    15% {
        transform: translate(-50%, -50%) rotate(0deg) translateX(10px);
        opacity: 1;
    }
    70% {
        transform: translate(-50%, -50%) rotate(720deg) translateX(10px);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) rotate(720deg) translateX(0);
        opacity: 0;
    }
}

.beton-thinking-text {
    font-size: 12px;
    font-weight: 600;
    color: #f8f9ff;
    background-image: linear-gradient(120deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.95) 50%, rgba(255, 255, 255, 0.3) 100%);
    background-size: 220% 100%;
    -webkit-background-clip: text;
    color: transparent;
    animation: thinkingShine 2s infinite linear;
}

@keyframes thinkingShine {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -20% 0;
    }
}

/* کانتینر چت اصلی */
#beton-chat-box {
    position: fixed;
    bottom: 110px;
    right: 30px;
    width: 420px;
    max-width: calc(100vw - 60px);
    height: 600px;
    background:
        linear-gradient(160deg, var(--glass-inner-top) 0%, var(--glass-inner-mid) 28%, var(--glass-inner-bottom) 100%),
        var(--glass-bg);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.28s ease, visibility 0.28s ease;
}

/* Desktop: center vertically */
@media (min-width: 769px) {
    #beton-chat-box {
        top: 50%;
        bottom: auto;
        transform: translateY(-50%);
    }
}

#beton-chat-box.show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* هدر چت */
.beton-chat-header {
    padding: 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: 20px 20px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.beton-chat-header-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 5px 0;
}

.beton-chat-header-content p {
    font-size: 12px;
    margin: 0;
    opacity: 0.9;
}

/* دکمه بستن */
.beton-close-btn {
    background: rgba(255, 255, 255, 0.14);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.beton-close-btn:hover {
    background: rgba(255, 255, 255, 0.24);
    transform: rotate(90deg);
}

.beton-chat-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.beton-smart-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    height: 28px;
    padding: 0 6px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 10px;
    cursor: pointer;
    line-height: 1;
    transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.beton-smart-toggle-word {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1;
    direction: ltr;
    unicode-bidi: isolate;
    font-family: 'Segoe UI', 'Vazirmatn', sans-serif;
    background: linear-gradient(180deg, #f1f5ff 0%, #c7d7ff 55%, #97b4ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.beton-smart-stars {
    position: absolute;
    top: -5px;
    right: 3px;
    width: 18px;
    height: 18px;
    pointer-events: none;
}

.beton-smart-star {
    position: absolute;
    color: #ffd86d;
    line-height: 1;
    filter: drop-shadow(0 0 6px rgba(255, 216, 109, 0.52));
    transform-origin: center center;
    animation: betonStarFloat 2.8s ease-in-out infinite, betonStarGlow 2.1s ease-in-out infinite;
}

.beton-smart-star.star-1 {
    top: 0;
    right: 0;
    font-size: 10px;
}

.beton-smart-star.star-2 {
    top: 6px;
    right: 9px;
    font-size: 7px;
    animation-delay: 0.35s;
}

.beton-smart-star.star-3 {
    top: 10px;
    right: 2px;
    font-size: 6px;
    animation-delay: 0.7s;
}

.beton-smart-toggle:hover {
    border-color: rgba(130, 166, 255, 0.8);
    background: rgba(73, 94, 160, 0.34);
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(52, 83, 179, 0.3);
}

.beton-smart-toggle:focus-visible {
    outline: none;
    border-color: rgba(130, 166, 255, 0.9);
    box-shadow: 0 0 0 2px rgba(96, 143, 255, 0.26);
}

@keyframes betonStarFloat {
    0%, 100% {
        transform: translate3d(0, 0, 0) rotate(0deg);
    }
    50% {
        transform: translate3d(-1px, -3px, 0) rotate(6deg);
    }
}

@keyframes betonStarGlow {
    0%, 100% {
        opacity: 0.55;
        filter: drop-shadow(0 0 4px rgba(255, 216, 109, 0.34));
    }
    50% {
        opacity: 1;
        filter: drop-shadow(0 0 9px rgba(255, 216, 109, 0.68));
    }
}

@media (prefers-reduced-motion: reduce) {
    .beton-smart-star {
        animation: none;
    }
}

/* بدنه چت - فضای اصلی پیام‌ها */
.beton-chat-body {
    flex: 1;
    padding: 20px;
    background: linear-gradient(to bottom, var(--glass-panel-dark-1) 0%, var(--glass-panel-dark-2) 100%);
    overflow-y: auto;
    backdrop-filter: blur(calc(var(--glass-blur) * 0.35)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(calc(var(--glass-blur) * 0.35)) saturate(var(--glass-saturate));
}

.beton-chat-body::-webkit-scrollbar {
    width: 6px;
}

.beton-chat-body::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 3px;
}

/* پیام‌های چت */
.beton-message {
    margin-bottom: 15px;
    display: flex;
    gap: 12px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.bot-message {
    justify-content: flex-start;
}

.user-message {
    justify-content: flex-end;
}

.beton-message-avatar {
    font-size: 24px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.beton-message-content {
    display: inline-block;
    padding: 14px 18px;
    border-radius: 12px;
    max-width: 75%;
    line-height: 1.6;
    font-size: 14px;
    word-wrap: break-word;
}

.bot-message .beton-message-content {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-bottom-right-radius: 4px;
}

.user-message .beton-message-content {
    background: rgba(255, 255, 255, 0.12);
    color: #f8f9ff;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-bottom-left-radius: 4px;
}

.user-message {
    gap: 0;
}

.user-message .beton-message-avatar {
    display: none;
}

.beton-message-content p {
    margin: 0 0 5px 0;
}

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

.beton-message-content .beton-code-block,
.beton-message-content .beton-formula-block {
    margin: 8px 0;
}

.beton-message-content .beton-code-block {
    direction: ltr;
    unicode-bidi: isolate;
    text-align: left;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: auto;
    border-radius: 10px;
    padding: 10px 12px;
    background: rgba(10, 14, 28, 0.36);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin: 0;
    font-family: Consolas, "Cascadia Code", "Fira Code", monospace;
    font-size: 12px;
    line-height: 1.6;
}

.beton-message-content .beton-code-block code {
    direction: ltr;
    unicode-bidi: isolate;
}

.beton-message-content .beton-formula-block pre {
    direction: ltr;
    unicode-bidi: isolate;
    text-align: left;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: auto;
    border-radius: 10px;
    padding: 10px 12px;
    background: rgba(10, 18, 34, 0.42);
    border: 1px solid rgba(130, 200, 255, 0.32);
    margin: 0;
    font-family: "STIX Two Math", "Cambria Math", "Noto Sans Math", "Latin Modern Math", "Times New Roman", serif;
    font-size: 13px;
    line-height: 1.7;
    letter-spacing: 0.01em;
}

.beton-message-content .beton-formula-block code {
    direction: ltr;
    unicode-bidi: isolate;
    font-family: inherit;
}

.beton-message-content .beton-formula-block {
    position: relative;
}

.beton-message-content .beton-formula-block::before {
    content: 'MATH';
    position: absolute;
    top: 7px;
    left: 11px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: rgba(175, 220, 255, 0.92);
    pointer-events: none;
}

[dir="rtl"] .beton-message-content .beton-formula-block::before {
    left: auto;
    right: 11px;
}

.beton-message-content .beton-formula-block pre {
    padding-top: 24px;
}

.beton-message-content .beton-formula-block.beton-formula-raw pre {
    overflow-x: hidden;
}

.beton-message-content .beton-katex-display,
.beton-message-content .katex-display,
.beton-message-content .katex {
    direction: ltr;
    unicode-bidi: isolate;
    text-align: left;
}

.beton-message-content .katex-display {
    margin: 0;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 2px;
}

.beton-message-content .katex {
    font-size: 1.04em;
}

/* Formula/code horizontal scrollbar: slim + chat-like theme */
.beton-message-content .beton-formula-block pre,
.beton-message-content .beton-code-block,
.beton-message-content .katex-display {
    scrollbar-width: thin;
    scrollbar-color: #7ea5ff rgba(255, 255, 255, 0.14);
}

.beton-message-content .beton-formula-block pre::-webkit-scrollbar,
.beton-message-content .beton-code-block::-webkit-scrollbar,
.beton-message-content .katex-display::-webkit-scrollbar {
    height: 5px;
    width: 5px;
}

.beton-message-content .beton-formula-block pre::-webkit-scrollbar-track,
.beton-message-content .beton-code-block::-webkit-scrollbar-track,
.beton-message-content .katex-display::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.14);
    border-radius: 999px;
}

.beton-message-content .beton-formula-block pre::-webkit-scrollbar-thumb,
.beton-message-content .beton-code-block::-webkit-scrollbar-thumb,
.beton-message-content .katex-display::-webkit-scrollbar-thumb {
    background: linear-gradient(90deg, #6f98ff 0%, #9bb8ff 100%);
    border-radius: 999px;
}

.beton-message-content .beton-formula-block pre::-webkit-scrollbar-thumb:hover,
.beton-message-content .beton-code-block::-webkit-scrollbar-thumb:hover,
.beton-message-content .katex-display::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(90deg, #88adff 0%, #b7ccff 100%);
}

/* Feedback buttons */
.beton-feedback-line {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 6px 0 2px 0;
    padding-left: 44px;
    font-size: 11px;
}

[dir="rtl"] .beton-feedback-line {
    padding-left: 0;
    padding-right: 44px;
}

.beton-feedback-btn {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #ffffff;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    padding: 0;
}

.beton-feedback-btn svg {
    width: 16px;
    height: 16px;
    fill: #ffffff;
    display: block;
}

.beton-feedback-btn:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.35);
}

.beton-feedback-btn:disabled {
    opacity: 0.5;
    cursor: default;
}

.beton-feedback-status {
    color: rgba(255, 255, 255, 0.7);
}

/* منوی اصلی - Grid 2×2 در پایین */
.beton-chat-menu {
    padding: 12px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    background: var(--glass-bg-soft);
    border-top: 1px solid var(--glass-border);
    flex-shrink: 0;
}

/* تشخیص هوشمند - پنل ورودی */
.beton-smart-panel {
    display: none;
    flex-direction: column;
    gap: 8px;
    padding: 10px 12px;
    background: var(--glass-bg-soft);
    border-top: 1px solid var(--glass-border);
    flex-shrink: 0;
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
}

.beton-smart-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.beton-smart-suggestion {
    background: rgba(102, 126, 234, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #ffffff;
    padding: 4px 10px;
    font-size: 11px;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
}

.beton-smart-suggestion:hover {
    border-color: var(--accent-blue);
    background: rgba(102, 126, 234, 0.18);
    transform: translateY(-1px);
}

.beton-smart-input-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

#beton-smart-input {
    flex: 1;
    padding: 9px 10px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    font-size: 12px;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
    transition: all 0.2s ease;
}

#beton-smart-input::placeholder {
    color: rgba(255, 255, 255, 0.75);
}

#beton-smart-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.12);
}

.beton-smart-send {
    background: linear-gradient(135deg, var(--accent-blue), #3f75ff);
    color: white;
    border: none;
    padding: 9px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s ease;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
}

.beton-smart-send:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(91, 141, 255, 0.35);
}

.beton-smart-close {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    border: none;
    background: rgba(255, 255, 255, 0.06);
    color: #ffffff;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.beton-smart-close:hover {
    background: rgba(255, 255, 255, 0.12);
}

.beton-suggestion-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.beton-suggestion-btn {
    background: rgba(36, 36, 44, 0.44);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: #ffffff;
    padding: 6px 10px;
    font-size: 12px;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
}

.beton-suggestion-btn:hover {
    border-color: var(--accent-blue);
    background: rgba(36, 36, 44, 0.44);
}

/* وضعیت فعال تشخیص هوشمند */
#beton-chat-box.smart-mode #beton-main-menu,
#beton-chat-box.smart-mode .beton-chat-form,
#beton-chat-box.smart-mode .beton-chat-footer {
    display: none !important;
}

#beton-chat-box.smart-mode #beton-smart-panel {
    display: flex;
}

#beton-chat-box.smart-mode .beton-smart-toggle {
    border-color: rgba(130, 166, 255, 0.92);
    background: rgba(60, 85, 150, 0.4);
    box-shadow: 0 0 0 2px rgba(96, 143, 255, 0.22), 0 8px 18px rgba(57, 92, 201, 0.28);
}

#beton-chat-box.smart-mode .beton-smart-star {
    animation-duration: 2.2s, 1.8s;
}

.beton-menu-btn {
    padding: 14px 8px;
    background: var(--glass-btn-bg);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    cursor: pointer;
    color: #ffffff;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 13px;
}

.beton-menu-btn:hover {
    border-color: var(--accent-blue);
    background: var(--glass-btn-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.beton-menu-btn:focus-visible,
.beton-menu-btn:active {
    border-color: var(--accent-blue);
    background: var(--glass-btn-bg);
    outline: none;
}


.beton-icon {
    font-size: 20px;
}

.beton-text {
    font-size: 12px;
    line-height: 1.2;
}

/* فرم‌های چت */
.beton-chat-form {
    padding: 15px;
    background: linear-gradient(to bottom, var(--glass-panel-dark-1) 0%, var(--glass-panel-dark-2) 100%);
    flex: 1;
    display: none;
    overflow-y: auto;
    backdrop-filter: blur(calc(var(--glass-blur) * 0.35)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(calc(var(--glass-blur) * 0.35)) saturate(var(--glass-saturate));
}

.beton-chat-form::-webkit-scrollbar {
    width: 4px;
}

.beton-chat-form::-webkit-scrollbar-thumb {
    background: #999;
    border-radius: 2px;
}

.beton-chat-form.active {
    display: flex;
    flex-direction: column;
}

.beton-form-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border);
}

.beton-back-btn {
    background: var(--accent-blue);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s ease;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
}

.beton-back-btn:hover {
    background: #3f75ff;
    transform: translateX(-3px);
}

.beton-form-header h4 {
    margin: 0;
    color: #ffffff;
    font-size: 16px;
    flex: 1;
    text-align: right;
}

/* فرم‌های ورودی */
.beton-calc-types {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 10px;
}

.beton-calc-type {
    background: var(--glass-btn-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    padding: 16px 12px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
    font-size: 12px;
    color: #ffffff;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
    text-align: center;
    font-weight: 600;
    min-height: 80px;
}

.beton-calc-type:hover {
    border-color: var(--accent-blue);
    background: var(--glass-btn-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.beton-calc-type.active {
    border-color: var(--accent-blue);
    background: rgba(34, 42, 82, 0.78);
    color: #ffffff;
    box-shadow: 0 8px 20px rgba(91, 141, 255, 0.36);
    font-weight: 700;
}


/* فرم Input */
.beton-input-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.beton-input-form label {
    font-weight: 600;
    font-size: 13px;
    color: #e6e9f2;
}

.beton-input-form input {
    padding: 10px 12px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    transition: all 0.2s ease;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
}

.beton-input-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* دکمه ارسال */
.beton-submit-btn {
    background: linear-gradient(135deg, var(--accent-blue), #3f75ff);
    color: white;
    border: none;
    padding: 14px 18px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: 8px;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
}

.beton-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(91, 141, 255, 0.35);
}

/* سوالات مشاوره فنی */
.beton-questions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.beton-q-title {
    grid-column: 1 / -1;
    color: #ffffff;
    font-size: 13px;
    font-weight: 600;
    margin: 0 0 8px 0;
}

.beton-question-btn {
    background: var(--glass-btn-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    padding: 14px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.3s ease;
    color: #ffffff;
    text-align: center;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-weight: 600;
    min-height: 80px;
}

.beton-question-btn:hover {
    border-color: var(--accent-blue);
    background: var(--glass-btn-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.beton-question-btn.active {
    border-color: var(--accent-blue);
    background: rgba(34, 42, 82, 0.78);
    color: #ffffff;
    box-shadow: 0 8px 20px rgba(91, 141, 255, 0.36);
}


/* محصولات */
.beton-product-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.beton-product-card {
    background: var(--glass-btn-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    padding: 12px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.beton-product-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
    transform: translateY(-2px);
}

.beton-product-card h5 {
    margin: 0 0 5px 0;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
}

.beton-product-card p {
    margin: 0 0 10px 0;
    color: #e0e3ea;
    font-size: 12px;
    line-height: 1.4;
}


.beton-contact-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s ease;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
}

.beton-contact-btn:hover {
    transform: scale(1.05);
}

/* اطلاعات شرکت */
.beton-company-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.beton-info-item {
    background: var(--glass-btn-bg);
    border-right: 4px solid var(--primary);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    padding: 12px;
    border-radius: 6px;
}

.beton-info-item h5 {
    margin: 0 0 6px 0;
    color: #ffffff;
    font-size: 13px;
    font-weight: 600;
}

.beton-info-item p {
    margin: 0;
    color: #e0e3ea;
    font-size: 12px;
    line-height: 1.5;
}


.beton-info-item a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
}

.beton-info-item a:hover {
    text-decoration: underline;
}

/* فوتر چت */
.beton-chat-footer {
    background: var(--glass-bg-soft);
    border-top: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    padding: 9px 12px;
    text-align: center;
    font-size: 11px;
    color: #cfd6ea;
    flex-shrink: 0;
}

.beton-chat-footer p {
    margin: 0;
    line-height: 1.4;
}

.beton-chat-footer a {
    color: #9bb8ff;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
}

.beton-chat-footer a:hover {
    color: #c7d8ff;
    text-decoration: underline;
}

/* انتخاب نوع ستون */
.beton-column-type-selector {
    margin-bottom: 16px;
}

.beton-column-type-selector > div {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 10px !important;
    margin-bottom: 16px !important;
}

.beton-column-type-btn {
    width: 100%;
    background: var(--glass-btn-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    padding: 12px 10px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all 0.3s ease;
    font-size: 12px;
    color: white;
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
    text-align: center;
    font-weight: 600;
    min-height: 70px;
}

.beton-column-type-btn:hover {
    border-color: var(--accent-blue);
    background: var(--glass-btn-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.beton-column-type-btn.active {
    border-color: var(--accent-blue);
    background: rgba(34, 42, 82, 0.78);
    color: #ffffff;
    box-shadow: 0 8px 20px rgba(91, 141, 255, 0.36);
}

.beton-column-type-btn > span:first-child {
    line-height: 1;
    font-size: 18px !important;
}

/* Responsive برای موبایل */
@media (max-width: 768px) {
    #beton-chat-box {
        width: calc(100vw - 20px);
        height: 72vh;
        bottom: 90px;
        right: 50%;
        transform: translateX(50%);
        left: auto;
    }
    
    #beton-chat-toggle {
        bottom: 20px;
        right: 20px;
        width: 60px;
        height: 60px;
    }
    
    .beton-message-content {
        max-width: 85%;
    }
    
    .beton-chat-menu {
        grid-template-columns: 1fr 1fr;
    }

    .beton-smart-panel {
        padding: 8px 10px;
    }

    /* Mobile optimization for AI toggle: reduce animation cost + center text */
    .beton-smart-toggle {
        min-width: 42px;
        height: 24px;
        padding: 0 4px;
        align-items: center;
    }

    .beton-smart-toggle-word {
        font-size: 13px;
        line-height: 1;
        transform: translateY(1px);
    }

    .beton-smart-stars {
        top: -2px;
        right: 1px;
        width: 14px;
        height: 14px;
    }

    .beton-smart-star {
        animation: none;
        filter: none;
        opacity: 0.85;
    }

    #beton-chat-box.smart-mode .beton-smart-star {
        animation: none;
    }

    #beton-chat-box.smart-mode .beton-smart-toggle {
        box-shadow: 0 0 0 1px rgba(96, 143, 255, 0.2);
    }

    .beton-smart-star.star-1 {
        font-size: 8px;
    }

    .beton-smart-star.star-2 {
        top: 4px;
        right: 7px;
        font-size: 6px;
    }

    .beton-smart-star.star-3 {
        display: none;
    }

    #beton-smart-input {
        font-size: 12px;
    }

    .beton-smart-send {
        padding: 8px 10px;
        font-size: 11px;
    }

    .beton-smart-close {
        width: 26px;
        height: 26px;
        font-size: 14px;
    }
    
    /* نوار اسکرول موبایل - نازکتر */
    .beton-chat-form::-webkit-scrollbar {
        width: 3px;
    }
    
    .beton-chat-form::-webkit-scrollbar-thumb {
        background: #bbb;
    }
}

/* Responsive برای گوشی های خیلی کوچک (iPhone SE, 6, 7, 8) */
@media (max-width: 420px) {
    #beton-chat-box {
        width: calc(100vw - 10px);
        height: 68vh;
        bottom: 80px;
        border-radius: 12px;
    }
    
    #beton-chat-toggle {
        bottom: 15px;
        right: 15px;
        width: 55px;
        height: 55px;
        font-size: 24px;
    }
    
    .beton-chat-header {
        padding: 15px;
        border-radius: 12px 12px 0 0;
    }
    
    .beton-chat-header-content h3 {
        font-size: 16px;
    }
    
    .beton-chat-header-content p {
        font-size: 11px;
    }
    
    .beton-chat-body {
        padding: 12px;
    }
    
    .beton-chat-menu {
        padding: 10px;
        gap: 6px;
    }
    
    .beton-menu-btn {
        padding: 12px 6px;
        font-size: 11px;
        gap: 4px;
    }

    .beton-smart-toggle {
        min-width: 40px;
        height: 23px;
        padding: 0 4px;
        align-items: center;
    }

    .beton-smart-toggle-word {
        font-size: 12px;
        transform: translateY(1px);
    }

    .beton-smart-stars {
        top: -2px;
        right: 2px;
    }

    .beton-smart-panel {
        padding: 8px;
        gap: 6px;
    }

    .beton-smart-suggestion {
        font-size: 10px;
        padding: 4px 8px;
    }

    #beton-smart-input {
        padding: 8px 9px;
        font-size: 11px;
    }

    .beton-smart-send {
        padding: 8px 9px;
        font-size: 11px;
    }

    .beton-smart-close {
        width: 24px;
        height: 24px;
        font-size: 13px;
    }
    
    .beton-icon {
        font-size: 18px;
    }
    
    .beton-text {
        font-size: 10px;
    }
    
    .beton-message {
        margin-bottom: 12px;
        gap: 8px;
    }
    
    .beton-message-avatar {
        width: 28px;
        height: 28px;
        font-size: 20px;
    }
    
    .beton-message-content {
        padding: 12px 14px;
        font-size: 13px;
        max-width: 80%;
    }
    
    .beton-chat-form {
        padding: 12px;
    }
    
    .beton-form-header {
        margin-bottom: 12px;
        padding-bottom: 12px;
    }
    
    .beton-form-header h4 {
        font-size: 14px;
    }
    
    .beton-back-btn {
        padding: 6px 10px;
        font-size: 11px;
    }
    
    .beton-calc-type,
    .beton-question-btn {
        padding: 12px 10px;
        min-height: 70px;
        font-size: 11px;
    }
    
    .beton-column-type-btn {
        padding: 8px 8px;
        min-height: 50px;
        gap: 3px;
        font-size: 10px;
    }
    
    .beton-input-form input {
        padding: 8px 10px;
        font-size: 12px;
    }
    
    .beton-submit-btn {
        padding: 12px 14px;
        font-size: 13px;
    }
    
    .beton-chat-footer {
        padding: 6px 10px;
        font-size: 10px;
    }
}

/* Forced dark theme (default, regardless of device mode) */
#beton-chat-box {
    background:
        linear-gradient(160deg, var(--glass-inner-top) 0%, var(--glass-inner-mid) 28%, var(--glass-inner-bottom) 100%),
        var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.45);
}

.beton-chat-body {
    background: linear-gradient(to bottom, var(--glass-panel-dark-1) 0%, var(--glass-panel-dark-2) 100%);
}

.beton-chat-menu {
    background: var(--glass-bg-soft);
    border-top-color: var(--glass-border);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
}

.beton-menu-btn {
    background: var(--glass-btn-bg);
    border: 1px solid var(--glass-border);
    color: #ffffff;
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
}

.beton-menu-btn:hover {
    background: var(--glass-btn-bg);
    border-color: var(--accent-blue);
}

.beton-calc-type,
.beton-question-btn,
.beton-column-type-btn,
.beton-product-card,
.beton-input-form input {
    background: var(--glass-btn-bg);
    border: 1px solid var(--glass-border);
    color: #ffffff;
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
}

/* RTL Support (فارسی) */
[dir="rtl"] {
    direction: rtl;
}

/* Print styles */
@media print {
    #beton-chat-toggle,
    #beton-chat-box {
        display: none !important;
    }
}