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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1e1e2f, #2a2a40);
    color: #fff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

/* ==================== اسکرول بار عمومی (کل صفحه) ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(30, 30, 47, 0.7);
    border-radius: 10px;
    backdrop-filter: blur(4px);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #6c63ff, #9b59b6);
    border-radius: 10px;
    transition: all 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a52e0, #8b44f0);
    box-shadow: 0 0 6px rgba(108, 99, 255, 0.5);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: #6c63ff #2d2d44;
}

/* ==================== اسکرول بار اختصاصی برای بخش پیام‌ها (chat-messages) ==================== */
.chat-messages {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: #1e1e2f;
    scroll-behavior: smooth;
}

/* Webkit (Chrome, Edge, Safari) - استایل اختصاصی برای پیام‌ها */
.chat-messages::-webkit-scrollbar {
    width: 10px;
    background-color: transparent;
}

.chat-messages::-webkit-scrollbar-track {
    background: rgba(45, 45, 68, 0.6);
    border-radius: 12px;
    margin: 8px 0;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(108, 99, 255, 0.15);
}

.chat-messages::-webkit-scrollbar-thumb {
    background: linear-gradient(145deg, #6c63ff, #b388ff);
    border-radius: 12px;
    transition: all 0.25s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(145deg, #5a52e0, #a06eff);
    transform: scale(1.02);
    box-shadow: 0 0 8px #6c63ff;
}

/* Firefox - برای بخش پیام‌ها */
.chat-messages {
    scrollbar-width: thin;
    scrollbar-color: #6c63ff #2d2d44;
}

.screen {
    display: none;
    width: 100%;
    max-width: 500px;
}
.screen.active {
    display: flex;
    justify-content: center;
}

.card {
    background: #2d2d44;
    border-radius: 20px;
    padding: 30px;
    width: 100%;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    text-align: center;
}

.wide {
    max-width: 600px;
}

h2 {
    margin-bottom: 20px;
    font-size: 1.5em;
}

.subtitle {
    color: #aaa;
    margin-bottom: 20px;
}

input {
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    border: none;
    background: #1e1e2f;
    color: #fff;
    font-size: 1em;
    margin-bottom: 15px;
    outline: none;
    text-align: center;
}

button {
    background: #6c63ff;
    border: none;
    border-radius: 12px;
    padding: 12px 24px;
    color: white;
    font-weight: bold;
    cursor: pointer;
    font-size: 1em;
    transition: background 0.2s;
    margin: 5px;
}
button:hover {
    background: #5a52e0;
}

.error-text {
    color: #ff6b6b;
    margin-top: 10px;
}

/* راهنما */
.guide-toggle {
    margin: 15px 0;
}

.guide-box {
    background: #1e1e2f;
    border-radius: 12px;
    padding: 15px;
    text-align: right;
    margin: 15px 0;
    font-size: 0.9em;
    display: none;
}
.guide-box.visible {
    display: block;
}
.guide-box ol {
    margin-right: 20px;
    line-height: 2;
}
.guide-box a {
    color: #6c63ff;
    word-break: break-all;
}
.token-warning {
    margin-top: 10px;
    font-size: 0.8em;
    color: #ffb347;
}

.input-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.input-group input {
    flex: 1;
    margin-bottom: 0;
}

/* چت */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 90vh;
    max-height: 800px;
    background: #2d2d44;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    width: 100%;
    position: relative;
}

.chat-header {
    background: #373752;
    padding: 10px 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.header-left {
    font-size: 1.1em;
    font-weight: bold;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-badge {
    font-size: 0.8em;
    background: #6c63ff;
    padding: 4px 10px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.user-badge img {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    object-fit: cover;
}

.logout-btn, .clear-chat-btn, .change-password-btn {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.2em;
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    line-height: 1;
    position: relative;
}
.clear-chat-btn:hover {
    background: #ff6b6b55;
}
.change-password-btn:hover {
    background: #ffb34755;
}
.clear-chat-btn.hidden, .change-password-btn.hidden {
    display: none;
}

.message {
    display: flex;
    flex-direction: column;
    max-width: 85%;
    align-self: flex-start;
}

.message .msg-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
}
.message .msg-header .sender-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}
.message .msg-header .sender-name {
    font-size: 0.8em;
    color: #a0a0c0;
}

.message .text {
    background: #3b3b5c;
    padding: 10px 14px;
    border-radius: 18px 18px 18px 4px;
    line-height: 1.5;
    word-wrap: break-word;
    display: inline-block;
}

.message .time {
    font-size: 0.65em;
    color: #7a7a9a;
    margin-top: 4px;
    margin-right: 8px;
}

.message.own {
    align-self: flex-end;
}
.message.own .text {
    background: #6c63ff;
    border-radius: 18px 18px 4px 18px;
}
.message.own .msg-header {
    justify-content: flex-end;
}

/* منطقه ورودی */
.chat-input-area {
    display: flex;
    gap: 8px;
    padding: 10px;
    background: #373752;
    align-items: center;
    flex-shrink: 0;
}

.chat-input-area input {
    flex: 1;
    margin-bottom: 0;
    border-radius: 25px;
    padding: 10px 15px;
    background: #2d2d44;
    text-align: right;
    border: none;
    color: white;
}

.emoji-btn, .send-btn {
    background: transparent;
    border: none;
    font-size: 1.5em;
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    line-height: 1;
    position: relative;
}
.send-btn {
    background: #6c63ff;
    font-size: 1.3em;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* پنل اموجی */
.emoji-picker {
    background: #2d2d44;
    border-top: 1px solid #444;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 250px;
    overflow-y: auto;
    display: none;
    z-index: 10;
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
}
.emoji-picker.visible {
    display: block;
}

.picker-tabs {
    display: flex;
    justify-content: space-around;
    padding: 8px;
    background: #373752;
}
.picker-tabs .tab {
    background: transparent;
    border: none;
    color: #aaa;
    font-size: 1em;
    cursor: pointer;
    padding: 4px 12px;
    border-bottom: 2px solid transparent;
}
.picker-tabs .tab.active {
    color: white;
    border-bottom-color: #6c63ff;
}

.picker-content {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 6px;
    padding: 10px;
    justify-items: center;
}
.picker-content .emoji-item {
    font-size: 1.5em;
    cursor: pointer;
    transition: transform 0.1s;
}
.picker-content .emoji-item:hover {
    transform: scale(1.3);
}

/* مودال تغییر رمز */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.25s ease;
}
.modal.show {
    display: flex;
    opacity: 1;
}
.modal-content {
    background: #2d2d44;
    border-radius: 28px;
    padding: 30px;
    width: 90%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 30px 40px rgba(0,0,0,0.5);
    transform: scale(0.9);
    transition: transform 0.2s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}
.modal.show .modal-content {
    transform: scale(1);
}
.modal-close {
    float: left;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #aaa;
    transition: color 0.2s;
}
.modal-close:hover {
    color: #fff;
}
.modal-content h3 {
    margin-bottom: 20px;
    font-size: 1.4em;
}
.modal-content input {
    text-align: right;
    margin-bottom: 15px;
}

/* ==================== مودال اختصاصی confirm ==================== */
.custom-confirm {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.custom-confirm.show {
    display: flex;
    opacity: 1;
}

.custom-confirm-content {
    background: linear-gradient(145deg, #2d2d44, #25253a);
    padding: 35px 30px;
    border-radius: 40px;
    width: 90%;
    max-width: 380px;
    text-align: center;
    box-shadow: 0 30px 50px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(108, 99, 255, 0.2);
    transform: scale(0.8);
    transition: transform 0.3s cubic-bezier(0.34, 1.2, 0.64, 1);
}

.custom-confirm.show .custom-confirm-content {
    transform: scale(1);
}

.custom-confirm-message {
    font-size: 1.3rem;
    margin-bottom: 30px;
    color: #fff;
    font-weight: 500;
    line-height: 1.5;
    word-break: break-word;
}

.custom-confirm-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.confirm-btn {
    flex: 1;
    padding: 12px 0;
    border-radius: 60px;
    font-size: 1rem;
    font-weight: bold;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.confirm-yes {
    background: linear-gradient(135deg, #6c63ff, #8b44f0);
    color: white;
    box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
}

.confirm-yes:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, #5a52e0, #7a3ad0);
    box-shadow: 0 8px 20px rgba(108, 99, 255, 0.4);
}

.confirm-no {
    background: #3a3a55;
    color: #ddd;
}

.confirm-no:hover {
    background: #4a4a6e;
    transform: translateY(-2px);
}

/* ==================== تولتیپ (جاوااسکریپتی، بدون محدودیت) ==================== */
.custom-tooltip {
    position: fixed;
    background: linear-gradient(135deg, #6c63ff, #9b59b6);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 20px;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    letter-spacing: 0.3px;
    line-height: 1.4;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    pointer-events: none;
    transform: translateY(0);
}

.custom-tooltip.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(-4px);
}

.custom-tooltip::before {
    content: "";
    position: absolute;
    border: 6px solid transparent;
    left: 50%;
    transform: translateX(-50%);
}

.custom-tooltip.tooltip-top::before {
    bottom: -12px;
    border-top-color: #9b59b6;
}

.custom-tooltip.tooltip-bottom::before {
    top: -12px;
    border-bottom-color: #9b59b6;
}

/* ریسپانسیو تولتیپ */
@media (max-width: 768px) {
    .custom-tooltip {
        white-space: normal;
        max-width: 200px;
        text-align: center;
        font-size: 0.7rem;
        padding: 5px 10px;
    }
}

/* رسپانسیو عمومی */
@media (max-width: 600px) {
    .chat-container {
        height: 100vh;
        border-radius: 0;
    }
    .card {
        padding: 20px;
    }
    .picker-content {
        grid-template-columns: repeat(6, 1fr);
    }
    .custom-confirm-content {
        padding: 25px 20px;
        width: 85%;
    }
    .custom-confirm-message {
        font-size: 1.1rem;
    }
    .confirm-btn {
        padding: 10px 0;
    }
}

/* ریسپانسیو اسکرول بار در موبایل */
@media (max-width: 768px) {
    ::-webkit-scrollbar {
        width: 6px;
    }
    .chat-messages::-webkit-scrollbar {
        width: 8px;
    }
}