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

        body {
            display: flex;
            min-height: 100vh;
            margin: 0;
            overflow-x: hidden;
            background-color: #100c14;
            color: #fff;
            font-family: 'Manrope', sans-serif;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(circle at 20% 30%, rgba(0, 123, 255, 0.02) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(0, 170, 255, 0.015) 0%, transparent 50%),
                linear-gradient(135deg, rgba(0, 0, 0, 0.1) 0%, rgba(28, 27, 42, 0.05) 100%);
            z-index: -1;
            pointer-events: none;
        }

        .sidebar {
            position: fixed;
            z-index: 1000;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .content {
            flex: 1;
            padding: 20px;
            overflow-y: auto;
            height: 100vh;
            position: relative;
        }

        @keyframes pulse {
            0% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
            100% { transform: translate(-50%, -50%) scale(1.3); opacity: 0; }
        }

        .particle {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            position: fixed;
            pointer-events: none;
            z-index: 9999;
            background: rgba(0, 123, 255, 0.7);
            box-shadow: 0 0 8px rgba(0, 123, 255, 0.4);
        }

        h1 {
            font-size: 22px;
            margin-bottom: 25px;
            font-weight: 800;
            background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.8) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
            position: relative;
        }

        .notice-box {
            background: rgba(28, 27, 42, 0.8);
            background-image: linear-gradient(135deg, rgba(0, 170, 255, 0.03) 0%, rgba(0, 123, 255, 0.01) 100%);
            border-radius: 18px;
            padding: 30px;
            color: #e0e0e0;
            font-family: 'Manrope', sans-serif;
            box-shadow: 
                0 8px 32px rgba(0, 0, 0, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .notice-box::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent 0%, #00aaff 50%, transparent 100%);
            transition: all 0.6s ease;
        }

        .notice-box::after {
            content: '';
            position: absolute;
            top: 0;
            right: 15px;
            width: 1px;
            height: 100%;
            background: linear-gradient(180deg, transparent 0%, rgba(0, 170, 255, 0.08) 50%, transparent 100%);
        }

        .notice-box:hover {
            transform: translateY(-2px);
            box-shadow: 
                0 12px 40px rgba(0, 0, 0, 0.25),
                inset 0 1px 0 rgba(255, 255, 255, 0.08);
            border-color: rgba(0, 170, 255, 0.12);
        }

        .notice-box:hover::before {
            left: 100%;
        }

        .notice-box h2 {
            font-size: 24px;
            font-weight: 900;
            margin-bottom: 15px;
            color: #00aaff;
            text-shadow: 0 2px 8px rgba(0, 170, 255, 0.15);
            letter-spacing: -0.01em;
            position: relative;
        }

        .notice-box h2::before {
            content: '';
            position: absolute;
            left: -18px;
            top: 50%;
            width: 3px;
            height: 100%;
            background: #00aaff;
            border-radius: 2px;
            transform: translateY(-50%);
        }

        .notice-box p {
            font-size: 15px;
            line-height: 1.7;
            color: rgba(240, 240, 240, 0.9);
            font-weight: 400;
        }

        .notice-box p strong {
            color: #fff;
            font-weight: 700;
            background: rgba(0, 170, 255, 0.08);
            padding: 2px 5px;
            border-radius: 3px;
            font-size: 14px;
        }

        .settings-form {
            background: rgba(28, 27, 42, 0.8);
            background-image: linear-gradient(135deg, rgba(0, 170, 255, 0.03) 0%, rgba(0, 123, 255, 0.01) 100%);
            padding: 35px;
            border-radius: 20px;
            box-shadow: 
                0 12px 35px rgba(0, 0, 0, 0.35),
                inset 0 1px 0 rgba(255, 255, 255, 0.05);
            width: 100%;
            max-width: 700px;
            margin-top: 30px;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .settings-form::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent 0%, rgba(0, 170, 255, 0.3) 50%, transparent 100%);
        }

        .form-header {
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .form-header h1 {
            font-size: 20px;
            font-weight: 900;
            margin-bottom: 8px;
            background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.8) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
        }

        .form-header h1::after {
            display: none;
        }

        .form-header p {
            margin-bottom: 0;
            font-size: 14px;
            color: rgba(224, 224, 224, 0.7);
            font-weight: 400;
        }

        .input-group {
            margin-bottom: 25px;
            position: relative;
        }

        .settings-form label {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
            font-weight: 700;
            color: #fff;
            font-size: 14px;
            letter-spacing: -0.01em;
        }

        .settings-form label i {
            font-size: 16px;
            color: #00aaff;
            width: 18px;
            text-align: center;
        }

        .input-wrapper {
            position: relative;
            overflow: hidden;
            border-radius: 14px;
        }

        .input-wrapper::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent 0%, rgba(0, 170, 255, 0.08) 50%, transparent 100%);
            transition: all 0.6s ease;
            z-index: 1;
            pointer-events: none;
        }

        .settings-form input[type="text"],
        .settings-form select,
        .settings-form input[type="file"] {
            width: 100%;
            padding: 16px 18px;
            border-radius: 14px;
            border: 2px solid rgba(255, 255, 255, 0.08);
            outline: none;
            background: rgba(37, 36, 55, 0.7);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            z-index: 2;
            font-family: 'Manrope', sans-serif;
        }

        .settings-form input[type="text"]::placeholder,
        .settings-form select::placeholder {
            color: rgba(224, 224, 224, 0.4);
            font-weight: 400;
        }

        .settings-form input[type="text"]:focus,
        .settings-form select:focus,
        .settings-form input[type="file"]:focus {
            border-color: rgba(0, 170, 255, 0.3);
            background: rgba(42, 42, 60, 0.8);
            box-shadow: 0 0 0 3px rgba(0, 170, 255, 0.08);
            transform: translateY(-1px);
        }

        .settings-form input[type="text"]:focus + .input-wrapper::before,
        .settings-form select:focus + .input-wrapper::before,
        .settings-form input[type="file"]:focus + .input-wrapper::before {
            left: 100%;
        }

        .toggle-switch {
            position: relative;
            display: inline-block;
            width: 60px;
            height: 34px;
        }

        .toggle-switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }

        .slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(255, 255, 255, 0.08);
            transition: 0.4s;
            border-radius: 34px;
        }

        .slider:before {
            position: absolute;
            content: "";
            height: 26px;
            width: 26px;
            left: 4px;
            bottom: 4px;
            background-color: #fff;
            transition: 0.4s;
            border-radius: 50%;
        }

        input:checked + .slider {
            background-color: <?php echo $isBlackMode ? '#ff4d4d' : '#375ace'; ?>;
        }

        input:checked + .slider:before {
            transform: translateX(26px);
        }

        .submit-button {
            width: 100%;
            padding: 16px 20px;
            background: #375ace;
            border: none;
            border-radius: 14px;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            letter-spacing: 0.01em;
            box-shadow: 0 4px 15px rgba(55, 90, 206, 0.25);
            font-family: 'Manrope', sans-serif;
        }

        .submit-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            transition: all 0.6s ease;
        }

        .submit-button:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(55, 90, 206, 0.15);
        }

        .submit-button:hover::before {
            left: 100%;
        }

        .submit-button:active {
            transform: translateY(0);
        }

        .submit-button i {
            margin-right: 8px;
        }

        .alert-box {
            display: flex;
            justify-content: center;
            align-items: center;
            text-align: center;
            color: rgba(218, 204, 204, 0.8);
            margin-top: 15px;
            font-size: 14px;
            padding: 12px;
            background: rgba(255, 255, 255, 0.02);
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.03);
            backdrop-filter: blur(5px);
        }

        .alert-box p {
            margin: 0;
            font-weight: 500;
            letter-spacing: 0.01em;
        }

        .highlight {
            color: #ff4d4d;
            font-weight: 700;
            background: rgba(255, 77, 77, 0.08);
            padding: 2px 5px;
            border-radius: 3px;
        }

        .mode-display {
            font-size: 14px;
            font-weight: 700;
            color: <?php echo $isBlackMode ? '#ff4d4d' : '#375ace'; ?>;
            margin-left: 10px;
        }

        .notice-box,
        .settings-form {
            animation: fadeInScale 0.7s cubic-bezier(0.4, 0, 0.2, 1);
        }

        @keyframes fadeInScale {
            from {
                opacity: 0;
                transform: scale(0.98) translateY(15px);
            }
            to {
                opacity: 1;
                transform: scale(1) translateY(0);
            }
        }

        .settings-form {
            animation: slideInFromBottom 0.7s cubic-bezier(0.4, 0, 0.2, 1);
            animation-delay: 0.2s;
            animation-fill-mode: both;
        }

        @keyframes slideInFromBottom {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .message {
            padding: 15px 20px;
            border-radius: 10px;
            margin-bottom: 20px;
            font-weight: 600;
            text-align: center;
            animation: slideInFromTop 0.5s ease;
        }

        .message.success {
            background: rgba(34, 197, 94, 0.1);
            border: 1px solid rgba(34, 197, 94, 0.3);
            color: #22c55e;
        }

        .message.error {
            background: rgba(239, 68, 68, 0.1);
            border: 1px solid rgba(239, 68, 68, 0.3);
            color: #ef4444;
        }

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

        .logo-preview {
            max-width: 150px;
            max-height: 150px;
            margin-top: 10px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        @media (max-width: 768px) {
            .content {
                padding: 15px;
            }

            .notice-box,
            .settings-form {
                padding: 20px;
                border-radius: 14px;
            }

            h1 {
                font-size: 20px;
            }

            .notice-box h2 {
                font-size: 20px;
            }

            .form-header h1 {
                font-size: 18px;
            }
        }