:root {
    --primary-color: var(--tg-theme-button-color, #008CBA);
    --text-color: var(--tg-theme-text-color, #333);
    --bg-color: var(--tg-theme-bg-color, #fff);
    --secondary-bg: var(--tg-theme-secondary-bg-color, #f5f5f5);
    --danger-color: #ff4444;
    --animation-duration: 0.3s;
    --toast-bg: rgba(0, 0, 0, 0.8);
}

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

body {
    font-family: 'Vazirmatn', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
    direction: rtl;
}

.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--toast-bg);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.reset-btn {
    position: fixed;
    top: 10px;
    left: 10px;
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-family: 'Vazirmatn';
    transition: all var(--animation-duration) ease;
    z-index: 1001;
}

.reset-btn:hover {
    background: #ff6666;
    transform: scale(1.05);
}

.user-info {
    position: fixed;
    top: 10px;
    left: 10px;
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.8;
    z-index: 1000;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

.header {
    text-align: left;
    margin-bottom: 10px;
}

.premium-icon {
    width: 20px;
    height: 20px;
    vertical-align: middle;
    margin-right: 5px;
}

.button-controls {
    background: var(--secondary-bg);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 2rem
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

input, textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    font-size: 16px;
    margin-bottom: 5px;
    font-family: 'Vazirmatn';
    background-color: var(--secondary-bg);
    color: var(--text-color);
    transition: all var(--animation-duration) ease;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(var(--primary-color-rgb), 0.2);
}

.input-group {
    position: relative;
}

.char-counter {
    position: absolute;
    bottom: -25px;
    left: 0;
    font-size: 12px;
    color: var(--text-color);
    opacity: 0.7;
    background-color: var(--secondary-bg);
    padding: 2px 8px;
    border-radius: 4px;
}

.char-limit-warning {
    color: var(--danger-color);
}

.add-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 15px 25px;
    border-radius: 8px;
    font-family: 'Vazirmatn';
    cursor: pointer;
    font-size: 16px;
    transition: opacity 0.3s;
    width: 100%;
}

.add-btn:hover {
    opacity: 0.9;
}

.button-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    padding: 15px;
}

.dynamic-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 15px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: all var(--animation-duration) ease-in-out;
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn var(--animation-duration) forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dynamic-btn:hover {
    transform: translateY(-2px);
}

.delete-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--danger-color);
    color: white;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    transform: scale(0.8);
    transition: all var(--animation-duration) ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
}

.dynamic-btn:hover .delete-btn {
    opacity: 1;
    transform: scale(1);
}

.delete-btn:hover {
    background: #ff6666;
    transform: scale(1.1);
}

.welcome-message {
    background: var(--secondary-bg);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 2rem;
    animation: slideDown var(--animation-duration) ease-out;
}

.welcome-message textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    font-size: 16px;
    resize: vertical;
    min-height: 60px;
    background: var(--bg-color);
    color: var(--text-color);
    transition: border-color var(--animation-duration);
}

.welcome-message textarea:focus {
    outline: none;
    border-color: var(--primary-color)
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .button-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .container {
        padding: 10px;
    }
    .button-controls {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .button-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    body {
        padding: 10px;
    }
    .header h1 {
        font-size: 20px;
    }
}